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Philosophy (from , ) is the systematized study of general and fundamental questions, such as those about
existence Existence is the ability of an entity to interact with reality. In philosophy, it refers to the ontology, ontological Property (philosophy), property of being. Etymology The term ''existence'' comes from Old French ''existence'', from Medieval ...
,
reason Reason is the capacity of consciously applying logic by drawing conclusions from new or existing information, with the aim of seeking the truth. It is closely associated with such characteristically human activities as philosophy, science, ...
,
knowledge Knowledge can be defined as awareness of facts or as practical skills, and may also refer to familiarity with objects or situations. Knowledge of facts, also called propositional knowledge, is often defined as true belief that is distinc ...
,
values In ethics and social sciences, value denotes the degree of importance of something or action, with the aim of determining which actions are best to do or what way is best to live (normative ethics in ethics), or to describe the significance of dif ...
,
mind The mind is the set of faculties responsible for all mental phenomena. Often the term is also identified with the phenomena themselves. These faculties include thought, imagination, memory, will, and sensation. They are responsible for various m ...
, and
language Language is a structured system of communication. The structure of a language is its grammar and the free components are its vocabulary. Languages are the primary means by which humans communicate, and may be conveyed through a variety of met ...
. Such questions are often posed as problems to be studied or resolved. Some sources claim the term was coined by
Pythagoras Pythagoras of Samos ( grc, Πυθαγόρας ὁ Σάμιος, Pythagóras ho Sámios, Pythagoras the Samos, Samian, or simply ; in Ionian Greek; ) was an ancient Ionians, Ionian Ancient Greek philosophy, Greek philosopher and the eponymou ...
( BCE), although this theory is disputed by some. Philosophical methods include questioning, critical discussion, rational argument, and systematic presentation. in . Historically, ''philosophy'' encompassed all bodies of knowledge and a practitioner was known as a ''
philosopher A philosopher is a person who practices or investigates philosophy. The term ''philosopher'' comes from the grc, φιλόσοφος, , translit=philosophos, meaning 'lover of wisdom'. The coining of the term has been attributed to the Greek th ...
''."The English word "philosophy" is first attested to , meaning "knowledge, body of knowledge." "
natural philosophy Natural philosophy or philosophy of nature (from Latin ''philosophia naturalis'') is the philosophical study of physics Physics is the natural science that studies matter, its fundamental constituents, its motion and behavior throu ...
," which began as a discipline in ancient India and Ancient Greece, encompasses
astronomy Astronomy () is a natural science that studies astronomical object, celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and chronology of the Universe, evolution. Objects of interest ...
,
medicine Medicine is the science and practice of caring for a patient, managing the diagnosis, prognosis, prevention, treatment, palliation of their injury or disease, and promoting their health. Medicine encompasses a variety of health care pract ...
, and
physics Physics is the natural science that studies matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. "Physical science is that department of knowledge which r ...
. For example,
Newton Newton most commonly refers to: * Isaac Newton (1642–1726/1727), English scientist * Newton (unit), SI unit of force named after Isaac Newton Newton may also refer to: Arts and entertainment * ''Newton'' (film), a 2017 Indian film * Newton ( ...
's 1687 ''
Mathematical Principles of Natural Philosophy Mathematics is an area of knowledge that includes the topics of numbers, formulas and related structures, shapes and the spaces in which they are contained, and quantities and their changes. These topics are represented in modern mathematics ...
'' later became classified as a book of physics. In the 19th century, the growth of modern
research universities A research university or a research-intensive university is a university that is committed to research as a central part of its mission. They are the most important sites at which knowledge production occurs, along with "intergenerational know ...
led academic philosophy and other disciplines to professionalize and specialize. Since then, various areas of investigation that were traditionally part of philosophy have become separate academic disciplines, and namely the
social sciences Social science is one of the branches of science, devoted to the study of societies and the relationships among individuals within those societies. The term was formerly used to refer to the field of sociology, the original "science of soci ...
such as
psychology Psychology is the scientific study of mind and behavior. Psychology includes the study of conscious and unconscious phenomena, including feelings and thoughts. It is an academic discipline of immense scope, crossing the boundaries betwe ...
,
sociology Sociology is a social science that focuses on society, human social behavior, patterns of Interpersonal ties, social relationships, social interaction, and aspects of culture associated with everyday life. It uses various methods of Empirical ...
,
linguistics Linguistics is the scientific study of human language. It is called a scientific study because it entails a comprehensive, systematic, objective, and precise analysis of all aspects of language, particularly its nature and structure. Linguis ...
, and
economics Economics () is the social science that studies the Production (economics), production, distribution (economics), distribution, and Consumption (economics), consumption of goods and services. Economics focuses on the behaviour and intera ...
. Today, major subfields of academic philosophy include
metaphysics Metaphysics is the branch of philosophy that studies the fundamental nature of reality, the first principles of being, identity and change, space and time, causality, necessity, and possibility. It includes questions about the nature of conscio ...
, which is concerned with the fundamental nature of
existence Existence is the ability of an entity to interact with reality. In philosophy, it refers to the ontology, ontological Property (philosophy), property of being. Etymology The term ''existence'' comes from Old French ''existence'', from Medieval ...
and
reality Reality is the sum or aggregate of all that is real or existent within a system, as opposed to that which is only imaginary. The term is also used to refer to the ontological status of things, indicating their existence. In physical terms, r ...
;
epistemology Epistemology (; ), or the theory of knowledge, is the branch of philosophy concerned with knowledge. Epistemology is considered a major subfield of philosophy, along with other major subfields such as ethics, logic, and metaphysics. Episte ...
, which studies the nature of
knowledge Knowledge can be defined as awareness of facts or as practical skills, and may also refer to familiarity with objects or situations. Knowledge of facts, also called propositional knowledge, is often defined as true belief that is distinc ...
and
belief A belief is an attitude that something is the case, or that some proposition is true. In epistemology, philosophers use the term "belief" to refer to attitudes about the world which can be either true or false. To believe something is to take i ...
;
ethics Ethics or moral philosophy is a branch of philosophy that "involves systematizing, defending, and recommending concepts of right and wrong behavior".''Internet Encyclopedia of Philosophy'' The field of ethics, along with aesthetics, concerns m ...
, which is concerned with
moral value In ethics and the social sciences, value theory involves various approaches that examine how, why, and to what degree humans value things and whether the object or subject of valuing is a person, idea, object, or anything else. Within philosophy, ...
; and
logic Logic is the study of correct reasoning. It includes both formal and informal logic. Formal logic is the science of deductively valid inferences or of logical truths. It is a formal science investigating how conclusions follow from premises ...
, which studies the
rules of inference In the philosophy of logic, a rule of inference, inference rule or transformation rule is a logical form consisting of a function which takes premises, analyzes their syntax, and returns a conclusion (or conclusions). For example, the rule of in ...
that allow one to derive conclusions from
true True most commonly refers to truth, the state of being in congruence with fact or reality. True may also refer to: Places * True, West Virginia, an unincorporated community in the United States * True, Wisconsin, a town in the United States * Tr ...
premises Premises are land and buildings together considered as a property. This usage arose from property owners finding the word in their title deeds, where it originally correctly meant "the aforementioned; what this document is about", from Latin ''pra ...
. Other notable subfields include
philosophy of religion Philosophy of religion is "the philosophical examination of the central themes and concepts involved in religious traditions". Philosophical discussions on such topics date from ancient times, and appear in the earliest known texts concerning ph ...
,
philosophy of science Philosophy of science is a branch of philosophy concerned with the foundations, methods, and implications of science. The central questions of this study concern what qualifies as science, the reliability of scientific theories, and the ultim ...
,
political philosophy Political philosophy or political theory is the philosophical study of government, addressing questions about the nature, scope, and legitimacy of public agents and institutions and the relationships between them. Its topics include politics, l ...
,
aesthetics Aesthetics, or esthetics, is a branch of philosophy that deals with the nature of beauty and taste, as well as the philosophy of art (its own area of philosophy that comes out of aesthetics). It examines aesthetic values, often expressed thr ...
,
philosophy of language In analytic philosophy, philosophy of language investigates the nature of language and the relations between language, language users, and the world. Investigations may include inquiry into the nature of meaning, intentionality, reference, ...
, and
philosophy of mind Philosophy of mind is a branch of philosophy that studies the ontology and nature of the mind and its relationship with the body. The mind–body problem is a paradigmatic issue in philosophy of mind, although a number of other issues are addre ...
.


Definitions

There is wide agreement that philosophy (from the
ancient Greek Ancient Greek includes the forms of the Greek language used in ancient Greece and the ancient world from around 1500 BC to 300 BC. It is often roughly divided into the following periods: Mycenaean Greek (), Dark Ages (), the Archaic peri ...
, phílos: "love"; and , sophía: "wisdom") is characterized by various general features: it is a form of
rational Rationality is the quality of being guided by or based on reasons. In this regard, a person acts rationally if they have a good reason for what they do or a belief is rational if it is based on strong evidence. This quality can apply to an abili ...
inquiry, it aims to be systematic, and it tends to critically reflect on its own methods and presuppositions. But approaches that go beyond such vague characterizations to give a more interesting or profound definition are usually controversial. Often, they are only accepted by theorists belonging to a certain
philosophical movement A philosophical movement refers to the phenomenon defined by a group of philosophers who share an origin or style of thought. Their ideas may develop substantially from a process of learning and communication within the group, rather than from out ...
and are revisionistic in that many presumed parts of philosophy would not deserve the title "philosophy" if they were true. Before the modern age, the term was used in a very wide sense, which included the individual
science Science is a systematic endeavor that builds and organizes knowledge in the form of testable explanations and predictions about the universe. Science may be as old as the human species, and some of the earliest archeological evidence for ...
s, like
physics Physics is the natural science that studies matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. "Physical science is that department of knowledge which r ...
or
mathematics Mathematics is an area of knowledge that includes the topics of numbers, formulas and related structures, shapes and the spaces in which they are contained, and quantities and their changes. These topics are represented in modern mathematics ...
, as its sub-disciplines, but the contemporary usage is more narrow. Some approaches argue that there is a set of essential features shared by all parts of philosophy while others see only weaker family resemblances or contend that it is merely an empty blanket term. Some definitions characterize philosophy in relation to its method, like pure reasoning. Others focus more on its topic, for example, as the study of the biggest patterns of the world as a whole or as the attempt to answer the big questions. Both approaches have the problem that they are usually either too wide, by including non-philosophical disciplines, or too narrow, by excluding some philosophical sub-disciplines. Many definitions of philosophy emphasize its intimate relation to science. In this sense, philosophy is sometimes understood as a proper science in its own right. Some naturalist approaches, for example, see philosophy as an empirical yet very abstract science that is concerned with very wide-ranging empirical patterns instead of particular observations. Some
phenomenologists Phenomenology may refer to: Art * Phenomenology (architecture), based on the experience of building materials and their sensory properties Philosophy * Phenomenology (philosophy), a branch of philosophy which studies subjective experiences and a ...
, on the other hand, characterize philosophy as the science of
essence Essence ( la, essentia) is a polysemic term, used in philosophy and theology as a designation for the property or set of properties that make an entity or substance what it fundamentally is, and which it has by necessity, and without which it ...
s. Science-based definitions usually face the problem of explaining why philosophy in its long history has not made the type of progress as seen in other sciences. This problem is avoided by seeing philosophy as an immature or provisional science whose subdisciplines cease to be philosophy once they have fully developed. In this sense, philosophy is the midwife of the sciences. Other definitions focus more on the contrast between science and philosophy. A common theme among many such definitions is that philosophy is concerned with meaning,
understanding Understanding is a psychological process related to an abstract or physical object, such as a person, situation, or message whereby one is able to use concepts to model that object. Understanding is a relation between the knower and an object o ...
, or the clarification of language. According to one view, philosophy is
conceptual analysis Philosophical analysis is any of various techniques, typically used by philosophers in the analytic tradition, in order to "break down" (i.e. analyze) philosophical issues. Arguably the most prominent of these techniques is the analysis of concepts ...
, which involves finding the
necessary and sufficient conditions In logic and mathematics, necessity and sufficiency are terms used to describe a conditional or implicational relationship between two statements. For example, in the conditional statement: "If then ", is necessary for , because the truth of ...
for the application of concepts. Another defines philosophy as a linguistic therapy that aims at dispelling misunderstandings to which humans are susceptible due to the confusing structure of
natural language In neuropsychology, linguistics, and philosophy of language, a natural language or ordinary language is any language that has evolved naturally in humans through use and repetition without conscious planning or premeditation. Natural languages ...
. One more approach holds that the main task of philosophy is to articulate the pre-ontological understanding of the world, which acts as a
condition of possibility In philosophy, condition of possibility (german: Bedingungen der Möglichkeit) is a concept made popular by the German philosopher Immanuel Kant, and is an important part of his philosophy. A condition of possibility is a necessary framework fo ...
of
experience Experience refers to conscious events in general, more specifically to perceptions, or to the practical knowledge and familiarity that is produced by these conscious processes. Understood as a conscious event in the widest sense, experience involv ...
. Many other definitions of philosophy do not clearly fall into any of the aforementioned categories. An early approach already found in
ancient Greek Ancient Greek includes the forms of the Greek language used in ancient Greece and the ancient world from around 1500 BC to 300 BC. It is often roughly divided into the following periods: Mycenaean Greek (), Dark Ages (), the Archaic peri ...
and
Roman philosophy Ancient Roman philosophy was heavily influenced by the ancient Greeks and the schools of Hellenistic philosophy; however, unique developments in philosophical schools of thought occurred during the Roman period as well. Interest in philosophy was ...
is that philosophy is the spiritual practice of developing one's
reasoning Reason is the capacity of consciously applying logic by drawing conclusions from new or existing information, with the aim of seeking the truth. It is closely associated with such characteristically human activities as philosophy, science, lang ...
ability. This practice is an expression of the philosopher's love of wisdom and has the aim of improving one's
well-being Well-being, or wellbeing, also known as wellness, prudential value or quality of life, refers to what is intrinsically valuable relative ''to'' someone. So the well-being of a person is what is ultimately good ''for'' this person, what is in th ...
by leading a reflective life. A closely related approach identifies the development and articulation of
worldviews A worldview or world-view or ''Weltanschauung'' is the fundamental cognitive orientation of an individual or society encompassing the whole of the individual's or society's knowledge, culture, and point of view. A worldview can include natural p ...
as the principal task of philosophy, i.e. to express how things on the grand scale hang together and which practical stance we should take towards them. Another definition characterizes philosophy as ''
thinking In their most common sense, the terms thought and thinking refer to conscious cognitive processes that can happen independently of sensory stimulation. Their most paradigmatic forms are judging, reasoning, concept formation, problem solving, an ...
about thinking'' in order to emphasize its reflective nature.


Historical overview

In one general sense, philosophy is associated with
wisdom Wisdom, sapience, or sagacity is the ability to contemplate and act using knowledge, experience, understanding, common sense and insight. Wisdom is associated with attributes such as unbiased judgment, compassion, experiential self-knowledge, ...
, intellectual culture, and a search for knowledge. In this sense, all cultures and literate societies ask philosophical questions, such as "how are we to live" and "what is the nature of reality". A broad and impartial conception of philosophy, then, finds a reasoned inquiry into such matters as
reality Reality is the sum or aggregate of all that is real or existent within a system, as opposed to that which is only imaginary. The term is also used to refer to the ontological status of things, indicating their existence. In physical terms, r ...
,
morality Morality () is the differentiation of intentions, decisions and actions between those that are distinguished as proper (right) and those that are improper (wrong). Morality can be a body of standards or principles derived from a code of cond ...
, and life in all world civilizations.


Western philosophy

Western philosophy Western philosophy encompasses the philosophical thought and work of the Western world. Historically, the term refers to the philosophical thinking of Western culture, beginning with the ancient Greek philosophy of the pre-Socratics. The word ' ...
is the philosophical tradition of the
Western world The Western world, also known as the West, primarily refers to the various nations and state (polity), states in the regions of Europe, North America, and Oceania.
, dating back to
pre-Socratic Pre-Socratic philosophy, also known as early Greek philosophy, is ancient Greek philosophy before Socrates. Pre-Socratic philosophers were mostly interested in cosmology, the beginning and the substance of the universe, but the inquiries of thes ...
thinkers who were active in 6th-century
Greece Greece,, or , romanized: ', officially the Hellenic Republic, is a country in Southeast Europe. It is situated on the southern tip of the Balkans, and is located at the crossroads of Europe, Asia, and Africa. Greece shares land borders with ...
(BCE), such as
Thales Thales of Miletus ( ; grc-gre, Θαλῆς; ) was a Greek mathematician, astronomer, statesman, and pre-Socratic philosopher from Miletus in Ionia, Asia Minor. He was one of the Seven Sages of Greece. Many, most notably Aristotle, regarded him ...
( BCE) and
Pythagoras Pythagoras of Samos ( grc, Πυθαγόρας ὁ Σάμιος, Pythagóras ho Sámios, Pythagoras the Samos, Samian, or simply ; in Ionian Greek; ) was an ancient Ionians, Ionian Ancient Greek philosophy, Greek philosopher and the eponymou ...
( BCE) who practiced a 'love of wisdom' () and were also termed 'students of nature' ().
Western philosophy Western philosophy encompasses the philosophical thought and work of the Western world. Historically, the term refers to the philosophical thinking of Western culture, beginning with the ancient Greek philosophy of the pre-Socratics. The word ' ...
can be divided into three eras: #
Ancient Ancient history is a time period from the History of writing, beginning of writing and recorded human history to as far as late antiquity. The span of recorded history is roughly 5,000 years, beginning with the Sumerian language, Sumerian c ...
(
Greco-Roman The Greco-Roman civilization (; also Greco-Roman culture; spelled Graeco-Roman in the Commonwealth), as understood by modern scholars and writers, includes the geographical regions and countries that culturally—and so historically—were di ...
). #
Medieval philosophy Medieval philosophy is the philosophy that existed through the Middle Ages, the period roughly extending from the fall of the Western Roman Empire in the 5th century until after the Renaissance in the 13th and 14th centuries. Medieval philosophy, ...
(referring to Christian European thought). #
Modern philosophy Modern philosophy is philosophy developed in the modern era and associated with modernity. It is not a specific doctrine or school (and thus should not be confused with ''Modernism''), although there are certain assumptions common to much of it ...
(beginning in the 17th century).


Ancient era

While our knowledge of the ancient era begins with
Thales Thales of Miletus ( ; grc-gre, Θαλῆς; ) was a Greek mathematician, astronomer, statesman, and pre-Socratic philosopher from Miletus in Ionia, Asia Minor. He was one of the Seven Sages of Greece. Many, most notably Aristotle, regarded him ...
in the 6th century BCE, little is known about the philosophers who came before
Socrates Socrates (; ; –399 BC) was a Greek philosopher from Athens who is credited as the founder of Western philosophy and among the first moral philosophers of the ethical tradition of thought. An enigmatic figure, Socrates authored no te ...
(commonly known as
the pre-Socratics Pre-Socratic philosophy, also known as early Greek philosophy, is ancient Greek philosophy before Socrates. Pre-Socratic philosophers were mostly interested in cosmology, the beginning and the substance of the universe, but the inquiries of the ...
). The ancient era was dominated by Greek philosophical schools. Most notable among the schools influenced by Socrates' teachings were
Plato Plato ( ; grc-gre, Πλάτων ; 428/427 or 424/423 – 348/347 BC) was a Greek philosopher born in Athens during the Classical period in Ancient Greece. He founded the Platonist school of thought and the Academy, the first institution ...
, who founded the
Platonic Academy The Academy (Ancient Greek: Ἀκαδημία) was founded by Plato in c. 387 BC in Classical Athens, Athens. Aristotle studied there for twenty years (367–347 BC) before founding his own school, the Lyceum (classical), Lyceum. The Academy ...
, and his student
Aristotle Aristotle (; grc-gre, Ἀριστοτέλης ''Aristotélēs'', ; 384–322 BC) was a Greek philosopher and polymath during the Classical period in Ancient Greece. Taught by Plato, he was the founder of the Peripatetic school of phil ...
, who founded the
Peripatetic school The Peripatetic school was a school of philosophy in Ancient Greece. Its teachings derived from its founder, Aristotle (384–322 BC), and ''peripatetic'' is an adjective ascribed to his followers. The school dates from around 335 BC when Aristo ...
. Other ancient philosophical traditions influenced by Socrates included
Cynicism Cynic or Cynicism may refer to: Modes of thought * Cynicism (philosophy), a school of ancient Greek philosophy * Cynicism (contemporary), modern use of the word for distrust of others' motives Books * ''The Cynic'', James Gordon Stuart Grant 1 ...
, Cyrenaicism,
Stoicism Stoicism is a school of Hellenistic philosophy founded by Zeno of Citium in Athens in the early 3rd century Common Era, BCE. It is a philosophy of personal virtue ethics informed by its system of logic and its views on the natural world, asser ...
, and
Academic Skepticism Academic skepticism refers to the skeptical period of ancient Platonism dating from around 266 BCE, when Arcesilaus became scholarch of the Platonic Academy, until around 90 BCE, when Antiochus of Ascalon rejected skepticism, although individua ...
. Two other traditions were influenced by Socrates' contemporary,
Democritus Democritus (; el, Δημόκριτος, ''Dēmókritos'', meaning "chosen of the people"; – ) was an Ancient Greek pre-Socratic philosopher from Abdera, primarily remembered today for his formulation of an atomic theory of the universe. No ...
:
Pyrrhonism Pyrrhonism is a school of philosophical skepticism founded by Pyrrho in the fourth century BCE. It is best known through the surviving works of Sextus Empiricus, writing in the late second century or early third century CE. History Pyrrho of E ...
and
Epicureanism Epicureanism is a system of philosophy founded around 307 BC based upon the teachings of the ancient Greek philosopher Epicurus. Epicureanism was originally a challenge to Platonism. Later its main opponent became Stoicism. Few writings by Epi ...
. Important topics covered by the Greeks included
metaphysics Metaphysics is the branch of philosophy that studies the fundamental nature of reality, the first principles of being, identity and change, space and time, causality, necessity, and possibility. It includes questions about the nature of conscio ...
(with competing theories such as
atomism Atomism (from Greek , ''atomon'', i.e. "uncuttable, indivisible") is a natural philosophy proposing that the physical universe is composed of fundamental indivisible components known as atoms. References to the concept of atomism and its atoms ...
and
monism Monism attributes oneness or singleness (Greek: μόνος) to a concept e.g., existence. Various kinds of monism can be distinguished: * Priority monism states that all existing things go back to a source that is distinct from them; e.g., i ...
),
cosmology Cosmology () is a branch of physics and metaphysics dealing with the nature of the universe. The term ''cosmology'' was first used in English in 1656 in Thomas Blount (lexicographer), Thomas Blount's ''Glossographia'', and in 1731 taken up in ...
, the nature of the well-lived life (''
eudaimonia Eudaimonia (Greek: εὐδαιμονία ; sometimes anglicized as eudaemonia or eudemonia, ) is a Greek word literally translating to the state or condition of 'good spirit', and which is commonly translated as 'happiness' or 'welfare'. In wor ...
''), the possibility of knowledge, and the nature of reason (
logos ''Logos'' (, ; grc, wikt:λόγος, λόγος, lógos, lit=word, discourse, or reason) is a term used in Western philosophy, psychology and rhetoric and refers to the appeal to reason that relies on logic or reason, inductive and deductive ...
). With the rise of the
Roman empire The Roman Empire ( la, Imperium Romanum ; grc-gre, Βασιλεία τῶν Ῥωμαίων, Basileía tôn Rhōmaíōn) was the post-Republican period of ancient Rome. As a polity, it included large territorial holdings around the Mediterr ...
, Greek philosophy was increasingly discussed in
Latin Latin (, or , ) is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through the power of the ...
by
Romans Roman or Romans most often refers to: *Rome, the capital city of Italy *Ancient Rome, Roman civilization from 8th century BC to 5th century AD *Roman people, the people of ancient Rome *''Epistle to the Romans'', shortened to ''Romans'', a letter ...
such as
Cicero Marcus Tullius Cicero ( ; ; 3 January 106 BC – 7 December 43 BC) was a Roman statesman, lawyer, scholar, philosopher, and academic skeptic, who tried to uphold optimate principles during the political crises that led to the estab ...
and
Seneca Seneca may refer to: People and language * Seneca (name), a list of people with either the given name or surname * Seneca people, one of the six Iroquois tribes of North America ** Seneca language, the language of the Seneca people Places Extrat ...
(see
Roman philosophy Ancient Roman philosophy was heavily influenced by the ancient Greeks and the schools of Hellenistic philosophy; however, unique developments in philosophical schools of thought occurred during the Roman period as well. Interest in philosophy was ...
).


Medieval era

Medieval philosophy Medieval philosophy is the philosophy that existed through the Middle Ages, the period roughly extending from the fall of the Western Roman Empire in the 5th century until after the Renaissance in the 13th and 14th centuries. Medieval philosophy, ...
(5th–16th centuries) took place during the period following the fall of the
Western Roman Empire The Western Roman Empire comprised the western provinces of the Roman Empire at any time during which they were administered by a separate independent Imperial court; in particular, this term is used in historiography to describe the period fr ...
and was dominated by the rise of
Christianity Christianity is an Abrahamic monotheistic religion based on the life and teachings of Jesus of Nazareth. It is the world's largest and most widespread religion with roughly 2.38 billion followers representing one-third of the global pop ...
; it hence reflects
Judeo-Christian The term Judeo-Christian is used to group Christianity and Judaism together, either in reference to Christianity's derivation from Judaism, Christianity's borrowing of Jewish Scripture to constitute the "Old Testament" of the Christian Bible, or ...
theological concerns while also retaining a continuity with Greco-Roman thought. Problems such as the existence and nature of
God In monotheism, monotheistic thought, God is usually viewed as the supreme being, creator deity, creator, and principal object of Faith#Religious views, faith.Richard Swinburne, Swinburne, R.G. "God" in Ted Honderich, Honderich, Ted. (ed)''The Ox ...
, the nature of
faith Faith, derived from Latin ''fides'' and Old French ''feid'', is confidence or trust in a person, thing, or In the context of religion, one can define faith as "belief in God or in the doctrines or teachings of religion". Religious people often ...
and reason, metaphysics, and the
problem of evil The problem of evil is the question of how to reconcile the existence of evil and suffering with an omnipotent, omnibenevolent, and omniscient God.The Stanford Encyclopedia of Philosophy,The Problem of Evil, Michael TooleyThe Internet Encyclope ...
were discussed in this period. Some key medieval thinkers include
St. Augustine Augustine of Hippo ( , ; la, Aurelius Augustinus Hipponensis; 13 November 354 – 28 August 430), also known as Saint Augustine, was a theologian and philosopher of Berber origin and the bishop of Hippo Regius in Numidia, Roman North Afri ...
,
Thomas Aquinas Thomas Aquinas, OP (; it, Tommaso d'Aquino, lit=Thomas of Aquino; 1225 – 7 March 1274) was an Italian Dominican friar and priest who was an influential philosopher, theologian and jurist in the tradition of scholasticism; he is known wi ...
,
Boethius Anicius Manlius Severinus Boethius, commonly known as Boethius (; Latin: ''Boetius''; 480 – 524 AD), was a Roman senator, consul, ''magister officiorum'', historian, and philosopher of the Early Middle Ages. He was a central figure in the tr ...
, Anselm and
Roger Bacon Roger Bacon (; la, Rogerus or ', also '' Rogerus''; ), also known by the scholastic accolade ''Doctor Mirabilis'', was a medieval English philosopher and Franciscan friar who placed considerable emphasis on the study of nature through empiri ...
. Philosophy for these thinkers was viewed as an aid to
theology Theology is the systematic study of the nature of the divine and, more broadly, of religious belief. It is taught as an academic discipline, typically in universities and seminaries. It occupies itself with the unique content of analyzing the ...
(), and hence they sought to align their philosophy with their interpretation of sacred scripture. This period saw the development of
scholasticism Scholasticism was a medieval school of philosophy that employed a critical organic method of philosophical analysis predicated upon the Aristotelian 10 Categories. Christian scholasticism emerged within the monastic schools that translate ...
, a text critical method developed in
medieval universities A medieval university was a corporation organized during the Middle Ages for the purposes of higher education. The first Western European institutions generally considered to be universities were established in present-day Italy (including the ...
based on close reading and disputation on key texts. The
Renaissance The Renaissance ( , ) , from , with the same meanings. is a period in European history marking the transition from the Middle Ages to modernity and covering the 15th and 16th centuries, characterized by an effort to revive and surpass ideas ...
period saw increasing focus on classic Greco-Roman thought and on a robust
humanism Humanism is a philosophical stance that emphasizes the individual and social potential and agency of human beings. It considers human beings the starting point for serious moral and philosophical inquiry. The meaning of the term "humani ...
.


Modern era

Early modern philosophy Early modern philosophy (also classical modern philosophy)Richard Schacht, ''Classical Modern Philosophers: Descartes to Kant'', Routledge, 2013, p. 1: "Seven men have come to stand out from all of their counterparts in what has come to be known ...
in the Western world begins with thinkers such as
Thomas Hobbes Thomas Hobbes ( ; 5/15 April 1588 – 4/14 December 1679) was an English philosopher, considered to be one of the founders of modern political philosophy. Hobbes is best known for his 1651 book ''Leviathan'', in which he expounds an influent ...
and
René Descartes René Descartes ( or ; ; Latinized: Renatus Cartesius; 31 March 1596 – 11 February 1650) was a French philosopher, scientist, and mathematician, widely considered a seminal figure in the emergence of modern philosophy and science. Mathem ...
(1596–1650). Following the rise of natural science,
modern philosophy Modern philosophy is philosophy developed in the modern era and associated with modernity. It is not a specific doctrine or school (and thus should not be confused with ''Modernism''), although there are certain assumptions common to much of it ...
was concerned with developing a secular and rational foundation for knowledge and moved away from traditional structures of authority such as religion, scholastic thought and the Church. Major modern philosophers include
Spinoza Baruch (de) Spinoza (born Bento de Espinosa; later as an author and a correspondent ''Benedictus de Spinoza'', anglicized to ''Benedict de Spinoza''; 24 November 1632 – 21 February 1677) was a Dutch philosopher of Portuguese-Jewish origin, b ...
,
Leibniz Gottfried Wilhelm (von) Leibniz . ( – 14 November 1716) was a German polymath active as a mathematician, philosopher, scientist and diplomat. He is one of the most prominent figures in both the history of philosophy and the history of mathema ...
, Locke,
Berkeley Berkeley most often refers to: *Berkeley, California, a city in the United States **University of California, Berkeley, a public university in Berkeley, California * George Berkeley (1685–1753), Anglo-Irish philosopher Berkeley may also refer ...
, Hume, and
Kant Immanuel Kant (, , ; 22 April 1724 – 12 February 1804) was a German Philosophy, philosopher and one of the central Age of Enlightenment, Enlightenment thinkers. Born in Königsberg, Kant's comprehensive and systematic works in epistemolo ...
.
19th-century philosophy In the 19th century, the philosophers of the 18th-century Enlightenment began to have a dramatic effect on subsequent developments in philosophy. In particular, the works of Immanuel Kant gave rise to a new generation of German philosophers and ...
(sometimes called
late modern philosophy Western philosophy encompasses the philosophical thought and work of the Western world. Historically, the term refers to the philosophical thinking of Western culture, beginning with the ancient Greek philosophy of the pre-Socratics. The word '' ...
) was influenced by the wider 18th-century movement termed "
the Enlightenment The Age of Enlightenment or the Enlightenment; german: Aufklärung, "Enlightenment"; it, L'Illuminismo, "Enlightenment"; pl, Oświecenie, "Enlightenment"; pt, Iluminismo, "Enlightenment"; es, La Ilustración, "Enlightenment" was an intel ...
", and includes figures such as
Hegel Georg Wilhelm Friedrich Hegel (; ; 27 August 1770 – 14 November 1831) was a German philosopher. He is one of the most important figures in German idealism and one of the founding figures of modern Western philosophy. His influence extends a ...
, a key figure in
German idealism German idealism was a philosophical movement that emerged in Germany in the late 18th and early 19th centuries. It developed out of the work of Immanuel Kant in the 1780s and 1790s, and was closely linked both with Romanticism and the revolutionary ...
; Kierkegaard, who developed the foundations for
existentialism Existentialism ( ) is a form of philosophical inquiry that explores the problem of human existence and centers on human thinking, feeling, and acting. Existentialist thinkers frequently explore issues related to the meaning, purpose, and valu ...
;
Thomas Carlyle Thomas Carlyle (4 December 17955 February 1881) was a Scottish essayist, historian and philosopher. A leading writer of the Victorian era, he exerted a profound influence on 19th-century art, literature and philosophy. Born in Ecclefechan, Dum ...
, representative of the great man theory;
Nietzsche Friedrich Wilhelm Nietzsche (; or ; 15 October 1844 – 25 August 1900) was a German philosopher, Prose poetry, prose poet, cultural critic, Philology, philologist, and composer whose work has exerted a profound influence on contemporary philo ...
, a famed anti-Christian;
John Stuart Mill John Stuart Mill (20 May 1806 – 7 May 1873) was an English philosopher, political economist, Member of Parliament (MP) and civil servant. One of the most influential thinkers in the history of classical liberalism, he contributed widely to ...
, who promoted
utilitarianism In ethical philosophy, utilitarianism is a family of normative ethical theories that prescribe actions that maximize happiness and well-being for all affected individuals. Although different varieties of utilitarianism admit different charact ...
;
Karl Marx Karl Heinrich Marx (; 5 May 1818 – 14 March 1883) was a German philosopher, economist, historian, sociologist, political theorist, journalist, critic of political economy, and socialist revolutionary. His best-known titles are the 1848 ...
, who developed the foundations for
communism Communism (from Latin la, communis, lit=common, universal, label=none) is a far-left sociopolitical, philosophical, and economic ideology and current within the socialist movement whose goal is the establishment of a communist society, a s ...
; and the American
William James William James (January 11, 1842 – August 26, 1910) was an American philosopher, historian, and psychologist, and the first educator to offer a psychology course in the United States. James is considered to be a leading thinker of the lat ...
. The 20th century saw the split between
analytic philosophy Analytic philosophy is a branch and tradition of philosophy using analysis, popular in the Western world and particularly the Anglosphere, which began around the turn of the 20th century in the contemporary era in the United Kingdom, United Sta ...
and
continental philosophy Continental philosophy is a term used to describe some philosophers and philosophical traditions that do not fall under the umbrella of analytic philosophy. However, there is no academic consensus on the definition of continental philosophy. Pri ...
, as well as philosophical trends such as
phenomenology Phenomenology may refer to: Art * Phenomenology (architecture), based on the experience of building materials and their sensory properties Philosophy * Phenomenology (philosophy), a branch of philosophy which studies subjective experiences and a ...
,
existentialism Existentialism ( ) is a form of philosophical inquiry that explores the problem of human existence and centers on human thinking, feeling, and acting. Existentialist thinkers frequently explore issues related to the meaning, purpose, and valu ...
,
logical positivism Logical positivism, later called logical empiricism, and both of which together are also known as neopositivism, is a movement in Western philosophy whose central thesis was the verification principle (also known as the verifiability criterion o ...
,
pragmatism Pragmatism is a philosophical tradition that considers words and thought as tools and instruments for prediction, problem solving, and action, and rejects the idea that the function of thought is to describe, represent, or mirror reality. ...
and the
linguistic turn The linguistic turn was a major development in Western philosophy during the early 20th century, the most important characteristic of which is the focusing of philosophy and the other humanities primarily on the relations between language, langua ...
(see
Contemporary philosophy Contemporary philosophy is the present period in the history of Western philosophy beginning at the early 20th century with the increasing professionalization of the discipline and the rise of analytic and continental philosophy. The phrase "c ...
).


Middle Eastern philosophy


Pre-Islamic philosophy

The regions of the
Fertile Crescent The Fertile Crescent ( ar, الهلال الخصيب) is a crescent-shaped region in the Middle East, spanning modern-day Iraq, Syria, Lebanon, Israel, Palestine and Jordan, together with the northern region of Kuwait, southeastern region of ...
,
Iran Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkmeni ...
and
Arabia The Arabian Peninsula, (; ar, شِبْهُ الْجَزِيرَةِ الْعَرَبِيَّة, , "Arabian Peninsula" or , , "Island of the Arabs") or Arabia, is a peninsula of Western Asia, situated northeast of Africa on the Arabian Plate. ...
are home to the earliest known philosophical wisdom literature. According to the
assyriologist Assyriology (from Greek , ''Assyriā''; and , '' -logia'') is the archaeological, anthropological, and linguistic study of Assyria and the rest of ancient Mesopotamia (a region that encompassed what is now modern Iraq, northeastern Syria, southea ...
Marc Van de Mieroop Marc Van de Mieroop (b. 22 October 1956) is a noted Belgian Assyriologist and Egyptologist who has been full professor of Ancient Near Eastern history at Columbia University since 1996. Biography Born in Belgium to a prominent Flemish family ...
,
Babylonia Babylonia (; Akkadian: , ''māt Akkadī'') was an ancient Akkadian-speaking state and cultural area based in the city of Babylon in central-southern Mesopotamia (present-day Iraq and parts of Syria). It emerged as an Amorite-ruled state c. ...
n philosophy was a highly developed system of thought with a unique approach to knowledge and a focus on writing,
lexicography Lexicography is the study of lexicons, and is divided into two separate academic disciplines. It is the art of compiling dictionaries. * Practical lexicography is the art or craft of compiling, writing and editing dictionaries. * Theoretica ...
, divination, and law. It was also a
bilingual Multilingualism is the use of more than one language, either by an individual speaker or by a group of speakers. It is believed that multilingual speakers outnumber monolingual speakers in the world's population. More than half of all E ...
intellectual culture, based on Sumerian and
Akkadian Akkadian or Accadian may refer to: * Akkadians, inhabitants of the Akkadian Empire * Akkadian language, an extinct Eastern Semitic language * Akkadian literature, literature in this language * Akkadian cuneiform Cuneiform is a logo- syllabi ...
. Early
Wisdom literature Wisdom literature is a genre of literature common in the ancient Near East. It consists of statements by sages and the wise that offer teachings about divinity and virtue. Although this genre uses techniques of traditional oral storytelling, it w ...
from the Fertile Crescent was a genre that sought to instruct people on ethical action, practical living, and virtue through stories and proverbs. In Ancient Egypt, these texts were known as ''
sebayt Sebayt (Egyptian '' sbꜣyt'', Coptic ⲥⲃⲱ "instruction, teaching") is the ancient Egyptian term for a genre of pharaonic literature. ''sbꜣyt'' literally means "teachings" or "instructions" and refers to formally written ethical teachings f ...
'' ('teachings'), and they are central to our understandings of
Ancient Egyptian philosophy Ancient Egyptian philosophy refers to the philosophical works and beliefs of Ancient Egypt. There is some debate regarding its true scope and nature.Juan José Castillos, Ancient Egyptian Philosophy, RSUE 31, 2014, 29-37. Notable works One Eg ...
. The most well known of these texts is ''
The Maxims of Ptahhotep ''The Maxims of Ptahhotep'' or ''Instruction of Ptahhotep'' is an ancient Egyptian literary composition composed by the Vizier Ptahhotep around 2375–2350 BC, during the rule of King Djedkare Isesi of the Fifth Dynasty. The text was discovered ...
.'' Theology and cosmology were central concerns in Egyptian thought. Perhaps the earliest form of a
monotheistic Monotheism is the belief that there is only one deity, an all-supreme being that is universally referred to as God. Cross, F.L.; Livingstone, E.A., eds. (1974). "Monotheism". The Oxford Dictionary of the Christian Church (2 ed.). Oxford: Oxford ...
theology Theology is the systematic study of the nature of the divine and, more broadly, of religious belief. It is taught as an academic discipline, typically in universities and seminaries. It occupies itself with the unique content of analyzing the ...
also emerged in Egypt, with the rise of the Amarna theology (or Atenism) of
Akhenaten Akhenaten (pronounced ), also spelled Echnaton, Akhenaton, ( egy, ꜣḫ-n-jtn ''ʾŪḫə-nə-yātəy'', , meaning "Effective for the Aten"), was an ancient Egyptian pharaoh reigning or 1351–1334 BC, the tenth ruler of the Eighteenth Dy ...
(14th century BCE), which held that the solar creation deity
Aten Aten also Aton, Atonu, or Itn ( egy, jtn, ''reconstructed'' ) was the focus of Atenism, the religious system established in ancient Egypt by the Eighteenth Dynasty pharaoh Akhenaten. The Aten was the disc of the sun and originally an aspect of ...
was the only god. This has been described as a "monotheistic revolution" by
egyptologist Egyptology (from ''Egypt'' and Greek , '' -logia''; ar, علم المصريات) is the study of ancient Egyptian history, language, literature, religion, architecture and art from the 5th millennium BC until the end of its native religious ...
Jan Assmann Jan Assmann (born Johann Christoph Assmann; born 7 July 1938) is a German Egyptologist. Life and works Assmann studied Egyptology and classical archaeology in Munich, Heidelberg, Paris, and Göttingen. In 1966–67, he was a fellow of the German ...
, though it also drew on previous developments in Egyptian thought, particularly the "New Solar Theology" based around
Amun-Ra Amun (; also ''Amon'', ''Ammon'', ''Amen''; egy, jmn, reconstructed as ( Old Egyptian and early Middle Egyptian) → (later Middle Egyptian) → ( Late Egyptian), cop, Ⲁⲙⲟⲩⲛ, Amoun) romanized: ʾmn) was a major ancient Egypt ...
. These theological developments also influenced the post-Amarna
Ramesside The New Kingdom, also referred to as the Egyptian Empire, is the period in ancient Egyptian History of Ancient Egypt, history between the sixteenth century BC and the eleventh century BC, covering the Eighteenth Dynasty of Egypt, Eighteenth, Ni ...
theology, which retained a focus on a single creative solar deity (though without outright rejection of other gods, which are now seen as manifestations of the main solar deity). This period also saw the development of the concept of the ''ba'' (soul) and its relation to god.
Jewish philosophy Jewish philosophy () includes all philosophy carried out by Jews, or in relation to the religion of Judaism. Until modern ''Haskalah'' (Jewish Enlightenment) and Jewish emancipation, Jewish philosophy was preoccupied with attempts to reconcile ...
and
Christian philosophy Christian philosophy includes all philosophy carried out by Christians, or in relation to the religion of Christianity. Christian philosophy emerged with the aim of reconciling science and faith, starting from natural rational explanations wit ...
are religious-philosophical traditions that developed both in the Middle East and in Europe, which both share certain early Judaic texts (mainly the
Tanakh The Hebrew Bible or Tanakh (;"Tanach"
''
Geonim ''Geonim'' ( he, גאונים; ; also transliterated Gaonim, singular Gaon) were the presidents of the two great Babylonian Talmudic Academies of Sura and Pumbedita, in the Abbasid Caliphate, and were the generally accepted spiritual leaders o ...
of the Talmudic Academies in Babylonia and
Maimonides Musa ibn Maimon (1138–1204), commonly known as Maimonides (); la, Moses Maimonides and also referred to by the acronym Rambam ( he, רמב״ם), was a Sephardic Jewish philosopher who became one of the most prolific and influential Torah ...
engaged with Greek and Islamic philosophy. Later Jewish philosophy came under strong Western intellectual influences and includes the works of
Moses Mendelssohn Moses Mendelssohn (6 September 1729 – 4 January 1786) was a German-Jewish philosopher and theologian. His writings and ideas on Jews and the Jewish religion and identity were a central element in the development of the ''Haskalah'', or 'Je ...
who ushered in the
Haskalah The ''Haskalah'', often termed Jewish Enlightenment ( he, השכלה; literally, "wisdom", "erudition" or "education"), was an intellectual movement among the Jews of Central and Eastern Europe, with a certain influence on those in Western Euro ...
(the Jewish Enlightenment),
Jewish existentialism Jewish existentialism is a category of work by Jewish authors dealing with existentialist themes and concepts (e.g. debate about the existence of God and the meaning of human existence), and intended to answer theological questions that are importan ...
, and
Reform Judaism Reform Judaism, also known as Liberal Judaism or Progressive Judaism, is a major Jewish denomination that emphasizes the evolving nature of Judaism, the superiority of its ethical aspects to its ceremonial ones, and belief in a continuous searc ...
. The various traditions of
Gnosticism Gnosticism (from grc, γνωστικός, gnōstikós, , 'having knowledge') is a collection of religious ideas and systems which coalesced in the late 1st century AD among Jewish Jews ( he, יְהוּדִים, , ) or Jewish people ...
, which were influenced by both Greek and Abrahamic currents, originated around the first century and emphasized spiritual knowledge (''
gnosis Gnosis is the common Greek noun for knowledge ( γνῶσις, ''gnōsis'', f.). The term was used among various Hellenistic religions and philosophies in the Greco-Roman world. It is best known for its implication within Gnosticism, where it ...
''). Pre-Islamic
Iranian philosophy Iranian philosophy (Persian: فلسفه ایرانی) or Persian philosophy can be traced back as far as to Old Iranian philosophical traditions and thoughts which originated in ancient Indo-Iranian roots and were considerably influenced by Zarat ...
begins with the work of
Zoroaster Zoroaster,; fa, زرتشت, Zartosht, label=New Persian, Modern Persian; ku, زەردەشت, Zerdeşt also known as Zarathustra,, . Also known as Zarathushtra Spitama, or Ashu Zarathushtra is regarded as the spiritual founder of Zoroastria ...
, one of the first promoters of
monotheism Monotheism is the belief that there is only one deity, an all-supreme being that is universally referred to as God. Cross, F.L.; Livingstone, E.A., eds. (1974). "Monotheism". The Oxford Dictionary of the Christian Church (2 ed.). Oxford: Oxford ...
and of the dualism between good and evil. This dualistic cosmogony influenced later Iranian developments such as
Manichaeism Manichaeism (; in New Persian ; ) is a former major religionR. van den Broek, Wouter J. Hanegraaff ''Gnosis and Hermeticism from Antiquity to Modern Times''SUNY Press, 1998 p. 37 founded in the 3rd century AD by the Parthian Empire, Parthian ...
,
Mazdakism Mazdakism was an Iranian religion, which was an offshoot of Zoroastrianism. The religion has been called one of the most noteworthy examples of pre-modern communism. The religion was founded in the early Sasanian Empire by Zardusht, a Zoroas ...
, and
Zurvanism Zurvanism is a fatalistic religious movement of Zoroastrianism in which the divinity Zurvan is a first principle (primordial creator deity) who engendered equal-but-opposite twins, Ahura Mazda and Angra Mainyu. Zurvanism is also known as "Zurvan ...
.


Islamic philosophy

Islamic philosophy Islamic philosophy is philosophy that emerges from the Islamic tradition. Two terms traditionally used in the Islamic world are sometimes translated as philosophy—falsafa (literally: "philosophy"), which refers to philosophy as well as logic, ...
is the philosophical work originating in the Islamic tradition and is mostly done in
Arabic Arabic (, ' ; , ' or ) is a Semitic languages, Semitic language spoken primarily across the Arab world.Semitic languages: an international handbook / edited by Stefan Weninger; in collaboration with Geoffrey Khan, Michael P. Streck, Janet C ...
. It draws from the religion of Islam as well as from Greco-Roman philosophy. After the
Muslim conquests The early Muslim conquests or early Islamic conquests ( ar, الْفُتُوحَاتُ الإسْلَامِيَّة, ), also referred to as the Arab conquests, were initiated in the 7th century by Muhammad, the main Islamic prophet. He estab ...
, the translation movement (mid-eighth to the late tenth century) resulted in the works of Greek philosophy becoming available in Arabic.
Early Islamic philosophy Early Islamic philosophy or classical Islamic philosophy is a period of intense philosophical development beginning in the 2nd century AH of the Islamic calendar (early 9th century CE) and lasting until the 6th century AH (late 12th century CE) ...
developed the Greek philosophical traditions in new innovative directions. This intellectual work inaugurated what is known as the
Islamic Golden Age The Islamic Golden Age was a period of cultural, economic, and scientific flourishing in the history of Islam, traditionally dated from the 8th century to the 14th century. This period is traditionally understood to have begun during the reign ...
. The two main currents of early Islamic thought are
Kalam ''ʿIlm al-Kalām'' ( ar, عِلْم الكَلام, literally "science of discourse"), usually foreshortened to ''Kalām'' and sometimes called "Islamic scholastic theology" or "speculative theology", is the philosophical study of Islamic doc ...
, which focuses on
Islamic theology Schools of Islamic theology are various Islamic schools and branches in different schools of thought regarding ''ʿaqīdah'' (creed). The main schools of Islamic Theology include the Qadariyah, Falasifa, Jahmiyya, Murji'ah, Muʿtazila, Bati ...
, and
Falsafa Islamic philosophy is philosophy that emerges from the Islamic tradition. Two terms traditionally used in the Islamic world are sometimes translated as philosophy—falsafa (literally: "philosophy"), which refers to philosophy as well as logi ...
, which was based on
Aristotelianism Aristotelianism ( ) is a philosophical tradition inspired by the work of Aristotle, usually characterized by deductive logic and an analytic inductive method in the study of natural philosophy and metaphysics. It covers the treatment of the socia ...
and
Neoplatonism Neoplatonism is a strand of Platonism, Platonic philosophy that emerged in the 3rd century AD against the background of Hellenistic philosophy and Hellenistic religion, religion. The term does not encapsulate a set of ideas as much as a chain of ...
. The work of Aristotle was very influential among philosophers such as
Al-Kindi Abū Yūsuf Yaʻqūb ibn ʼIsḥāq aṣ-Ṣabbāḥ al-Kindī (; ar, أبو يوسف يعقوب بن إسحاق الصبّاح الكندي; la, Alkindus; c. 801–873 AD) was an Arab Muslim philosopher, polymath, mathematician, physician ...
(9th century),
Avicenna Ibn Sina ( fa, ابن سینا; 980 – June 1037 CE), commonly known in the West as Avicenna (), was a Persian polymath who is regarded as one of the most significant physicians, astronomers, philosophers, and writers of the Islamic G ...
(980 – June 1037), and
Averroes Ibn Rushd ( ar, ; full name in ; 14 April 112611 December 1198), often Latinized as Averroes ( ), was an Andalusian polymath and jurist who wrote about many subjects, including philosophy, theology, medicine, astronomy, physics, psycholog ...
(12th century). Others such as
Al-Ghazali Al-Ghazali ( – 19 December 1111; ), full name (), and known in Persian-speaking countries as Imam Muhammad-i Ghazali (Persian: امام محمد غزالی) or in Medieval Europe by the Latinized as Algazelus or Algazel, was a Persian polymat ...
were highly critical of the methods of the Islamic Aristotelians and saw their metaphysical ideas as heretical. Islamic thinkers like
Ibn al-Haytham Ḥasan Ibn al-Haytham, Latinized as Alhazen (; full name ; ), was a medieval mathematician, astronomer, and physicist of the Islamic Golden Age from present-day Iraq.For the description of his main fields, see e.g. ("He is one of the prin ...
and
Al-Biruni Abu Rayhan Muhammad ibn Ahmad al-Biruni (973 – after 1050) commonly known as al-Biruni, was a Khwarazmian Iranian in scholar and polymath during the Islamic Golden Age. He has been called variously the "founder of Indology", "Father of Co ...
also developed a
scientific method The scientific method is an empirical method for acquiring knowledge that has characterized the development of science since at least the 17th century (with notable practitioners in previous centuries; see the article history of scientific m ...
, experimental medicine, a theory of optics, and a legal philosophy.
Ibn Khaldun Ibn Khaldun (; ar, أبو زيد عبد الرحمن بن محمد بن خلدون الحضرمي, ; 27 May 1332 – 17 March 1406, 732-808 AH) was an Arab The Historical Muhammad', Irving M. Zeitlin, (Polity Press, 2007), p. 21; "It is, of ...
was an influential thinker in
philosophy of history Philosophy of history is the philosophical study of history and its discipline. The term was coined by French philosopher Voltaire. In contemporary philosophy a distinction has developed between ''speculative'' philosophy of history and ''crit ...
. Islamic thought also deeply influenced European intellectual developments, especially through the commentaries of Averroes on Aristotle. The
Mongol invasions The Mongol invasions and conquests took place during the 13th and 14th centuries, creating history's largest contiguous empire: the Mongol Empire ( 1206- 1368), which by 1300 covered large parts of Eurasia. Historians regard the Mongol devastati ...
and the destruction of Baghdad in 1258 are often seen as marking the end of the Golden Age. Several schools of Islamic philosophy continued to flourish after the Golden Age, however, and include currents such as
Illuminationist philosophy Illuminationism (Persian حكمت اشراق ''hekmat-e eshrāq'', Arabic: حكمة الإشراق ''ḥikmat al-ishrāq'', both meaning "Wisdom of the Rising Light"), also known as ''Ishrāqiyyun'' or simply ''Ishrāqi'' (Persian اشراق, Arab ...
,
Sufi philosophy Sufi philosophy includes the schools of thought unique to Sufism, the mystical tradition within Islam, also termed as ''Tasawwuf'' or ''Faqr'' according to its adherents. Sufism and its philosophical tradition may be associated with both Sunni a ...
, and
Transcendent theosophy Transcendent theosophy or al-hikmat al-muta’āliyah (حكمت متعاليه), the doctrine and philosophy developed by Persian philosopher Mulla Sadra (d.1635 CE), is one of two main disciplines of Islamic philosophy that are currently live an ...
. The 19th- and 20th-century
Arab world The Arab world ( ar, اَلْعَالَمُ الْعَرَبِيُّ '), formally the Arab homeland ( '), also known as the Arab nation ( '), the Arabsphere, or the Arab states, refers to a vast group of countries, mainly located in Western A ...
saw the ''
Nahda The Nahda ( ar, النهضة, translit=an-nahḍa, meaning "the Awakening"), also referred to as the Arab Awakening or Enlightenment, was a cultural movement that flourished in Arabic-speaking regions of the Ottoman Empire, notably in Egypt, Leb ...
'' movement (literally meaning 'The Awakening'; also known as the 'Arab Renaissance'), which had a considerable influence on
contemporary Islamic philosophy Contemporary Islamic philosophy revives some of the trends of medieval Islamic philosophy, notably the tension between Mutazilite and Asharite views of ethics in science and law, and the duty of Muslims and role of Islam in the sociology of kno ...
.


Eastern philosophy


Indian philosophy

Indian philosophy Indian philosophy refers to philosophical traditions of the Indian subcontinent. A traditional Hindu classification divides āstika and nāstika schools of philosophy, depending on one of three alternate criteria: whether it believes the Veda ...
( sa, , lit=point of view', 'perspective) refers to the diverse philosophical traditions that emerged since the ancient times on the
Indian subcontinent The Indian subcontinent is a list of the physiographic regions of the world, physiographical region in United Nations geoscheme for Asia#Southern Asia, Southern Asia. It is situated on the Indian Plate, projecting southwards into the Indian O ...
. Indian philosophy chiefly considers epistemology, theories of consciousness and theories of mind, and the physical properties of reality. Indian philosophical traditions share various key concepts and ideas, which are defined in different ways and accepted or rejected by the different traditions. These include concepts such as ''dhárma'', ''
karma Karma (; sa, कर्म}, ; pi, kamma, italic=yes) in Sanskrit means an action, work, or deed, and its effect or consequences. In Indian religions, the term more specifically refers to a principle of cause and effect, often descriptivel ...
'', ''
pramāṇa ''Pramana'' (Sanskrit: प्रमाण, ) literally means " proof" and "means of knowledge".duḥkha ''Duḥkha'' (; Sanskrit: दुःख; Pāli: ''dukkha''), commonly translated as "suffering", "pain," or "unhappiness," is an important concept in Buddhism, Jainism and Hinduism. Its meaning depends on the context, and may refer more specifi ...
,
saṃsāra ''Saṃsāra'' (Devanagari: संसार) is a Pali/Sanskrit word that means "world". It is also the concept of rebirth and "cyclicality of all life, matter, existence", a fundamental belief of most Indian religions. Popularly, it is the c ...
'' and ''
mokṣa ''Moksha'' (; sa, मोक्ष, '), also called ''vimoksha'', ''vimukti'' and ''mukti'', is a term in Hinduism, Buddhism, Jainism and Sikhism for various forms of emancipation, enlightenment, liberation, and release. In its soteriologica ...
.'' Some of the earliest surviving Indian philosophical texts are the
Upanishads The Upanishads (; sa, उपनिषद् ) are late Vedic Sanskrit texts that supplied the basis of later Hindu philosophy.Wendy Doniger (1990), ''Textual Sources for the Study of Hinduism'', 1st Edition, University of Chicago Press, , ...
of the
later Vedic period Later may refer to: * Future, the time after the present Television * ''Later'' (talk show), a 1988–2001 American talk show * '' Later... with Jools Holland'', a British music programme since 1992 * ''The Life and Times of Eddie Roberts'', or ...
(1000–500 BCE), which are considered to preserve the ideas of
Brahmanism The historical Vedic religion (also known as Vedicism, Vedism or ancient Hinduism and subsequently Brahmanism (also spelled as Brahminism)), constituted the religious ideas and practices among some Indo-Aryan peoples of northwest Indian Subco ...
. Indian philosophical traditions are commonly grouped according to their relationship to the Vedas and the ideas contained in them.
Jainism Jainism ( ), also known as Jain Dharma, is an Indian religions, Indian religion. Jainism traces its spiritual ideas and history through the succession of twenty-four tirthankaras (supreme preachers of ''Dharma''), with the first in the current ...
and
Buddhism Buddhism ( , ), also known as Buddha Dharma and Dharmavinaya (), is an Indian religion or philosophical tradition based on teachings attributed to the Buddha. It originated in northern India as a -movement in the 5th century BCE, and gra ...
originated at the end of the
Vedic period The Vedic period, or the Vedic age (), is the period in the late Bronze Age and early Iron Age of the history of India when the Vedic literature, including the Vedas (ca. 1300–900 BCE), was composed in the northern Indian subcontinent, betw ...
, while the various traditions grouped under
Hinduism Hinduism () is an Indian religion or '' dharma'', a religious and universal order or way of life by which followers abide. As a religion, it is the world's third-largest, with over 1.2–1.35 billion followers, or 15–16% of the global p ...
mostly emerged after the Vedic period as independent traditions. Hindus generally classify Indian philosophical traditions as either orthodox ( ''āstika'') or heterodox (''nāstika'') depending on whether they accept the authority of the
Vedas upright=1.2, The Vedas are ancient Sanskrit texts of Hinduism. Above: A page from the '' Atharvaveda''. The Vedas (, , ) are a large body of religious texts originating in ancient India. Composed in Vedic Sanskrit, the texts constitute the ...
and the theories of ''
brahman In Hinduism, ''Brahman'' ( sa, ब्रह्मन्) connotes the highest universal principle, the ultimate reality in the universe.P. T. Raju (2006), ''Idealistic Thought of India'', Routledge, , page 426 and Conclusion chapter part X ...
'' and ''ātman'' found therein. The schools which align themselves with the thought of the Upanishads, the so-called "orthodox" or "
Hindu Hindus (; ) are people who religiously adhere to Hinduism.Jeffery D. Long (2007), A Vision for Hinduism, IB Tauris, , pages 35–37 Historically, the term has also been used as a geographical, cultural, and later religious identifier for ...
" traditions, are often classified into six '' darśanas'' or philosophies: Sānkhya,
Yoga Yoga (; sa, योग, lit=yoke' or 'union ) is a group of physical, mental, and spiritual practices or disciplines which originated in ancient India and aim to control (yoke) and still the mind, recognizing a detached witness-consciou ...
,
Nyāya (Sanskrit: न्याय, ''nyā-yá''), literally meaning "justice", "rules", "method" or "judgment",Vaisheshika Vaisheshika or Vaiśeṣika ( sa, वैशेषिक) is one of the six schools of Indian philosophy (Vedic systems) from ancient India. In its early stages, the Vaiśeṣika was an independent philosophy with its own metaphysics, epistemolog ...
, Mimāmsā and
Vedānta ''Vedanta'' (; sa, वेदान्त, ), also ''Uttara Mīmāṃsā'', is one of the six (''āstika'') schools of Hindu philosophy. Literally meaning "end of the Vedas", Vedanta reflects ideas that emerged from, or were aligned with, t ...
. The doctrines of the Vedas and Upanishads were interpreted differently by these six schools of
Hindu philosophy Hindu philosophy encompasses the philosophies, world views and teachings of Hinduism that emerged in Ancient India which include six systems ('' shad-darśana'') – Samkhya, Yoga, Nyaya, Vaisheshika, Mimamsa and Vedanta.Andrew Nicholson (20 ...
, with varying degrees of overlap. They represent a "collection of philosophical views that share a textual connection", according to Chadha (2015). They also reflect a tolerance for a diversity of philosophical interpretations within Hinduism while sharing the same foundation. Hindu philosophers of the six orthodox schools developed systems of epistemology (''
pramana ''Pramana'' (Sanskrit: प्रमाण, ) literally means " proof" and "means of knowledge".guṇa ( sa, गुण) is a concept in Hinduism, Jainism and Sikhism, which can be translated as "quality, peculiarity, attribute, property".hermeneutics Hermeneutics () is the theory and methodology of interpretation, especially the interpretation of biblical texts, wisdom literature, and philosophical texts. Hermeneutics is more than interpretative principles or methods used when immediate c ...
, and
soteriology Soteriology (; el, σωτηρία ' "salvation" from σωτήρ ' "savior, preserver" and λόγος ' "study" or "word") is the study of religious doctrines of salvation. Salvation theory occupies a place of special significance in many religio ...
within the framework of the Vedic knowledge, while presenting a diverse collection of interpretations. The commonly named six orthodox schools were the competing philosophical traditions of what has been called the "Hindu synthesis" of classical Hinduism. There are also other schools of thought which are often seen as "Hindu", though not necessarily orthodox (since they may accept different scriptures as normative, such as the Shaiva Agamas and Tantras), these include different schools of Shavism such as
Pashupata Pashupata Shaivism (, sa, पाशुपत) is the oldest of the major Shaivite Hindu schools. The mainstream which follows Vedic Pasupata penance are 'Maha Pasupatas' and the schism of 'Lakula Pasupata' of Lakulisa. There is a debate about p ...
,
Shaiva Siddhanta Shaiva Siddhanta () (Tamil: சைவ சித்தாந்தம் "Caiva cittāntam") is a form of Shaivism that propounds a dualistic philosophy where the ultimate and ideal goal of a being is to become an enlightened soul through Shiv ...
, non-dual tantric Shavism (i.e. Trika, Kaula, etc.). The "Hindu" and "Orthodox" traditions are often contrasted with the "unorthodox" traditions (''nāstika,'' literally "those who reject"), though this is a label that is not used by the "unorthodox" schools themselves. These traditions reject the Vedas as authoritative and often reject major concepts and ideas that are widely accepted by the orthodox schools (such as ''Ātman'', ''Brahman'', and ''Īśvara''). These unorthodox schools include Jainism (accepts ''ātman'' but rejects ''Īśvara,'' Vedas and ''Brahman''), Buddhism (rejects all orthodox concepts except rebirth and karma),
Cārvāka Charvaka ( sa, चार्वाक; IAST: ''Cārvāka''), also known as ''Lokāyata'', is an ancient school of Indian materialism. Charvaka holds direct perception, empiricism, and conditional inference as proper sources of knowledge, embrace ...
(materialists who reject even rebirth and karma) and
Ājīvika ''Ajivika'' (IAST: ) is one of the ''nāstika'' or "heterodox" schools of Indian philosophy.Natalia Isaeva (1993), Shankara and Indian Philosophy, State University of New York Press, , pages 20-23James Lochtefeld, "Ajivika", ''The Illustrated ...
(known for their doctrine of fate).<
Jain philosophy Jain philosophy refers to the ancient Indian philosophy, Indian philosophical system found in Jainism. One of the main features of Jain philosophy is its Mind–body dualism, dualistic metaphysics, which holds that there are two distinct categor ...
is one of the only two surviving "unorthodox" traditions (along with Buddhism). It generally accepts the concept of a permanent soul (''
jiva ''Jiva'' ( sa, जीव, IAST: ) is a living being or any entity imbued with a life force in Hinduism and Jīva (Jainism), Jainism. The word itself originates from the Sanskrit verb-root ''jīv'', which translates as 'to breathe' or 'to live'. ...
'') as one of the five '' astikayas'' (eternal, infinite categories that make up the substance of existence). The other four being ''dhárma'', ''
adharma Adharma is the Sanskrit antonym of dharma. It means "that which is not in accord with the dharma". Connotations include betrayal, discord, disharmony, unnaturalness, wrongness, evil, immorality, unrighteousness, wickedness, and vice..In Indian ...
'', '' ākāśa'' ('space'), and ''
pudgala In Jainism, Pudgala (or ') is one of the six Dravyas, or aspects of reality that fabricate the world we live in. The six ''dravya''s include the jiva and the fivefold divisions of ajiva (non-living) category: ''dharma'' (motion), ''adharma'' (r ...
'' ('matter'). Jain thought holds that all existence is cyclic, eternal and uncreated. Some of the most important elements of Jain philosophy are the Jain theory of karma, the doctrine of nonviolence (
ahiṃsā Ahimsa (, IAST: ''ahiṃsā'', ) is the ancient Indian principle of nonviolence which applies to all living beings. It is a key virtue in most Indian religions: Jainism, Buddhism, and Hinduism.Bajpai, Shiva (2011). The History of India – F ...
) and the theory of "many-sidedness" or Anēkāntavāda. The ''
Tattvartha Sutra ''Tattvārthasūtra'', meaning "On the Nature 'artha''of Reality 'tattva'' (also known as ''Tattvarth-adhigama-sutra'' or ''Moksha-shastra'') is an ancient Jain text written by ''Acharya (Jainism), Acharya'' Umaswami in Sanskrit, somet ...
'' is the earliest known, most comprehensive and authoritative compilation of Jain philosophy. Major European Quantum Physicists, including Erwin Schrödinger, Werner Heisenberg, Albert Einstein, & Niels Bohr credit the Vedas with giving them the ideas for their experiments.


Buddhist philosophy

Buddhist philosophy begins with the thought of
Gautama Buddha Siddhartha Gautama, most commonly referred to as the Buddha, was a wandering ascetic and religious teacher who lived in South Asia during the 6th or 5th century BCE and founded Buddhism. According to Buddhist tradition, he was born in Lu ...
(
fl. ''Floruit'' (; abbreviated fl. or occasionally flor.; from Latin for "they flourished") denotes a date or period during which a person was known to have been alive or active. In English, the unabbreviated word may also be used as a noun indicatin ...
between 6th and 4th century BCE) and is preserved in the
early Buddhist texts Early Buddhist texts (EBTs), early Buddhist literature or early Buddhist discourses are parallel texts shared by the early Buddhist schools. The most widely studied EBT material are the first four Pali Nikayas, as well as the corresponding Chines ...
. It originated in the Indian region of
Magadha Magadha was a region and one of the sixteen sa, script=Latn, Mahajanapadas, label=none, lit=Great Kingdoms of the Second Urbanization (600–200 BCE) in what is now south Bihar (before expansion) at the eastern Ganges Plain. Magadha was ruled ...
and later spread to the rest of the
Indian subcontinent The Indian subcontinent is a list of the physiographic regions of the world, physiographical region in United Nations geoscheme for Asia#Southern Asia, Southern Asia. It is situated on the Indian Plate, projecting southwards into the Indian O ...
,
East Asia East Asia is the eastern region of Asia, which is defined in both geographical and ethno-cultural terms. The modern states of East Asia include China, Japan, Mongolia, North Korea, South Korea, and Taiwan. China, North Korea, South Korea and ...
,
Tibet Tibet (; ''Böd''; ) is a region in East Asia, covering much of the Tibetan Plateau and spanning about . It is the traditional homeland of the Tibetan people. Also resident on the plateau are some other ethnic groups such as Monpa people, ...
,
Central Asia Central Asia, also known as Middle Asia, is a subregion, region of Asia that stretches from the Caspian Sea in the west to western China and Mongolia in the east, and from Afghanistan and Iran in the south to Russia in the north. It includes t ...
, and
Southeast Asia Southeast Asia, also spelled South East Asia and South-East Asia, and also known as Southeastern Asia, South-eastern Asia or SEA, is the geographical United Nations geoscheme for Asia#South-eastern Asia, south-eastern region of Asia, consistin ...
. In these regions, Buddhist thought developed into different philosophical traditions which used various languages (like
Tibetan Tibetan may mean: * of, from, or related to Tibet * Tibetan people, an ethnic group * Tibetan language: ** Classical Tibetan, the classical language used also as a contemporary written standard ** Standard Tibetan, the most widely used spoken dial ...
,
Chinese Chinese can refer to: * Something related to China * Chinese people, people of Chinese nationality, citizenship, and/or ethnicity **''Zhonghua minzu'', the supra-ethnic concept of the Chinese nation ** List of ethnic groups in China, people of va ...
and
Pali Pali () is a Middle Indo-Aryan liturgical language native to the Indian subcontinent. It is widely studied because it is the language of the Buddhist ''Pāli Canon'' or ''Tipiṭaka'' as well as the sacred language of ''Theravāda'' Buddhism ...
). As such, Buddhist philosophy is a trans-cultural and international phenomenon. The dominant Buddhist philosophical traditions in
East Asian East Asia is the eastern region of Asia, which is defined in both geographical and ethno-cultural terms. The modern states of East Asia include China, Japan, Mongolia, North Korea, South Korea, and Taiwan. China, North Korea, South Korea a ...
nations are mainly based on Indian
Mahayana ''Mahāyāna'' (; "Great Vehicle") is a term for a broad group of Buddhist traditions, texts, philosophies, and practices. Mahāyāna Buddhism developed in India (c. 1st century BCE onwards) and is considered one of the three main existing bra ...
Buddhism. The philosophy of the Theravada school is dominant in
Southeast Asia Southeast Asia, also spelled South East Asia and South-East Asia, and also known as Southeastern Asia, South-eastern Asia or SEA, is the geographical United Nations geoscheme for Asia#South-eastern Asia, south-eastern region of Asia, consistin ...
n countries like
Sri Lanka Sri Lanka (, ; si, ශ්‍රී ලංකා, Śrī Laṅkā, translit-std=ISO (); ta, இலங்கை, Ilaṅkai, translit-std=ISO ()), formerly known as Ceylon and officially the Democratic Socialist Republic of Sri Lanka, is an ...
,
Burma Myanmar, ; UK pronunciations: US pronunciations incl. . Note: Wikipedia's IPA conventions require indicating /r/ even in British English although only some British English speakers pronounce r at the end of syllables. As John Wells explai ...
and
Thailand Thailand ( ), historically known as Siam () and officially the Kingdom of Thailand, is a country in Southeast Asia, located at the centre of the Indochinese Peninsula, spanning , with a population of almost 70 million. The country is bo ...
. Because
ignorance Ignorance is a lack of knowledge and understanding. The word "ignorant" is an adjective that describes a person in the state of being unaware, or even cognitive dissonance and other cognitive relation, and can describe individuals who are unaware o ...
to the true nature of things is considered one of the roots of suffering ('' dukkha''), Buddhist philosophy is concerned with epistemology, metaphysics, ethics and psychology. Buddhist philosophical texts must also be understood within the context of meditative practices which are supposed to bring about certain cognitive shifts. Key innovative concepts include the
Four Noble Truths In Buddhism, the Four Noble Truths (Sanskrit: ; pi, cattāri ariyasaccāni; "The four Arya satyas") are "the truths of the Noble Ones", the truths or realities for the "spiritually worthy ones". ''anicca'' (impermanence), and ''anatta">Impermanence">''anicca'' (impermanence), and ''anatta'' (non-self). After the death of the Buddha, various groups began to systematize his main teachings, eventually developing comprehensive philosophical systems termed ''Abhidharma''. Following the Abhidharma schools, Indian
Mahayana ''Mahāyāna'' (; "Great Vehicle") is a term for a broad group of Buddhist traditions, texts, philosophies, and practices. Mahāyāna Buddhism developed in India (c. 1st century BCE onwards) and is considered one of the three main existing bra ...
philosophers such as
Nagarjuna Nāgārjuna . 150 – c. 250 CE (disputed)was an Indian Mahāyāna Buddhist thinker, scholar-saint and philosopher. He is widely considered one of the most important Buddhist philosophers.Garfield, Jay L. (1995), ''The Fundamental Wisdom of ...
and
Vasubandhu Vasubandhu (; Tibetan: དབྱིག་གཉེན་ ; floruit, fl. 4th to 5th century CE) was an influential bhikkhu, Buddhist monk and scholar from ''Puruṣapura'' in ancient India, modern day Peshawar, Pakistan. He was a philosopher who ...
developed the theories of ''
śūnyatā ''Śūnyatā'' ( sa, शून्यता, śūnyatā; pi, suññatā; ), translated most often as ''emptiness'', ''vacuity'', and sometimes ''voidness'', is an Indian philosophical concept. Within Hinduism, Jainism, Buddhism and other p ...
'' ('emptiness of all phenomena') and ''vijñapti-matra'' ('appearance only'), a form of phenomenology or
transcendental idealism Transcendental idealism is a philosophical system founded by German philosopher Immanuel Kant in the 18th century. Kant's epistemological program is found throughout his '' Critique of Pure Reason'' (1781). By ''transcendental'' (a term that des ...
. The
Dignāga Dignāga (a.k.a. ''Diṅnāga'', c. 480 – c. 540 CE) was an Indian Buddhist scholar and one of the Buddhist founders of Indian logic (''hetu vidyā''). Dignāga's work laid the groundwork for the development of deductive logic in India and cr ...
school of ''
pramāṇa ''Pramana'' (Sanskrit: प्रमाण, ) literally means " proof" and "means of knowledge".. There were numerous schools, sub-schools, and traditions of Buddhist philosophy in ancient and medieval India. According to Oxford professor of Buddhist philosophy
Jan Westerhoff Jan Christoph Westerhoff is a German philosopher and orientalist with specific interests in metaphysics and the philosophy of language. He is currently Professor of Buddhist Philosophy in the Faculty of Theology and Religion of the University of O ...
, the major Indian schools from 300 BCE to 1000 CE were: the
Mahāsāṃghika The Mahāsāṃghika (Brahmi: 𑀫𑀳𑀸𑀲𑀸𑀁𑀖𑀺𑀓, "of the Great Sangha", ) was one of the early Buddhist schools. Interest in the origins of the Mahāsāṃghika school lies in the fact that their Vinaya recension appears in se ...
tradition (now extinct), the Sthavira schools (such as
Sarvāstivāda The ''Sarvāstivāda'' (Sanskrit and Pali: 𑀲𑀩𑁆𑀩𑀢𑁆𑀣𑀺𑀯𑀸𑀤, ) was one of the early Buddhist schools established around the reign of Ashoka (3rd century BCE).Westerhoff, The Golden Age of Indian Buddhist Philosophy ...
,
Vibhajyavāda Vibhajyavāda (Sanskrit; Pāli: ''Vibhajjavāda''; ) is a term applied generally to groups of early Buddhists belonging to the Sthavira Nikaya. These various groups are known to have rejected Sarvāstivāda doctrines (especially the doctrine of " ...
and Pudgalavāda) and the
Mahayana ''Mahāyāna'' (; "Great Vehicle") is a term for a broad group of Buddhist traditions, texts, philosophies, and practices. Mahāyāna Buddhism developed in India (c. 1st century BCE onwards) and is considered one of the three main existing bra ...
schools. Many of these traditions were also studied in other regions, like Central Asia and China, having been brought there by Buddhist missionaries. After the disappearance of Buddhism from India, some of these philosophical traditions continued to develop in the
Tibetan Buddhist Tibetan Buddhism (also referred to as Indo-Tibetan Buddhism, Lamaism, Lamaistic Buddhism, Himalayan Buddhism, and Northern Buddhism) is the form of Buddhism practiced in Tibet and Bhutan, where it is the dominant religion. It is also in majo ...
,
East Asian Buddhist East Asian Buddhism or East Asian Mahayana is a collective term for the schools of Mahāyāna Buddhism that developed across East Asia which follow the Chinese Buddhist canon. These include the various forms of Chinese, Japanese, Korean, and Vi ...
and
Theravada Buddhist ''Theravāda'' () ( si, ථේරවාදය, my, ထေရဝါဒ, th, เถรวาท, km, ថេរវាទ, lo, ເຖຣະວາດ, pi, , ) is the most commonly accepted name of Buddhism's oldest existing school. The school' ...
traditions.


East Asian philosophy

East Asian philosophical thought began in
Ancient China The earliest known written records of the history of China date from as early as 1250 BC, from the Shang dynasty (c. 1600–1046 BC), during the reign of king Wu Ding. Ancient historical texts such as the '' Book of Documents'' (early chapte ...
, and
Chinese philosophy Chinese philosophy originates in the Spring and Autumn period () and Warring States period (), during a period known as the "Hundred Schools of Thought", which was characterized by significant intellectual and cultural developmen ...
begins during the
Western Zhou The Western Zhou ( zh, c=, p=Xīzhōu; c. 1045 BC – 771 BC) was a royal dynasty of China and the first half of the Zhou dynasty. It began when King Wu of Zhou overthrew the Shang dynasty at the Battle of Muye and ended when the Quanrong noma ...
Dynasty and the following periods after its fall when the "
Hundred Schools of Thought The Hundred Schools of Thought () were philosophies and schools that flourished from the 6th century BC to 221 BC during the Spring and Autumn period and the Warring States period of ancient China. An era of substantial discrimination in China, ...
" flourished (6th century to 221 BCE). This period was characterized by significant intellectual and cultural developments and saw the rise of the major philosophical schools of China such as
Confucianism Confucianism, also known as Ruism or Ru classicism, is a system of thought and behavior originating in ancient China. Variously described as tradition, a philosophy, a religion, a humanistic or rationalistic religion, a way of governing, or ...
(also known as Ruism), Legalism, and
Taoism Taoism (, ) or Daoism () refers to either a school of Philosophy, philosophical thought (道家; ''daojia'') or to a religion (道教; ''daojiao''), both of which share ideas and concepts of China, Chinese origin and emphasize living in harmo ...
as well as numerous other less influential schools like
Mohism Mohism or Moism (, ) was an ancient Chinese philosophy of ethics and logic, rational thought, and science developed by the academic scholars who studied under the ancient Chinese philosopher Mozi (c. 470 BC – c. 391 BC), embodied in an epony ...
and Naturalism. These philosophical traditions developed metaphysical, political and ethical theories such
Tao ''Tao'' or ''Dao'' is the natural order of the universe, whose character one's intuition must discern to realize the potential for individual wisdom, as conceived in the context of East Asian philosophy, East Asian religions, or any other philo ...
,
Yin and yang Yin and yang ( and ) is a Chinese philosophy, Chinese philosophical concept that describes opposite but interconnected forces. In Chinese cosmology, the universe creates itself out of a primary chaos of material energy, organized into the c ...
,
Ren Ren or REN may refer to: Abbreviations * Orenburg Tsentralny Airport, IATA code REN, civil airport in Russia * Redes Energéticas Nacionais (REN), Portuguese company * Renanthera, abbreviated as Ren, orchid genus * Ringer equivalence number ( ...
and Li. These schools of thought further developed during the
Han Han may refer to: Ethnic groups * Han Chinese, or Han People (): the name for the largest ethnic group in China, which also constitutes the world's largest ethnic group. ** Han Taiwanese (): the name for the ethnic group of the Taiwanese p ...
(206 BCE – 220 CE) and
Tang Tang or TANG most often refers to: * Tang dynasty * Tang (drink mix) Tang or TANG may also refer to: Chinese states and dynasties * Jin (Chinese state) (11th century – 376 BC), a state during the Spring and Autumn period, called Tang (唐) b ...
(618–907 CE) eras, forming new philosophical movements like ''
Xuanxue Xuanxue (), sometimes called Neo-Daoism (Neo-Taoism), is a metaphysical post-classical Chinese philosophy from the Six Dynasties (222-589), bringing together Taoist and Confucian beliefs through revision and discussion. The movement found its scrip ...
'' (also called ''Neo-Taoism''), and
Neo-Confucianism Neo-Confucianism (, often shortened to ''lǐxué'' 理學, literally "School of Principle") is a moral, ethical, and metaphysical Chinese philosophy Chinese philosophy originates in the Spring and Autumn period () and Wa ...
. Neo-Confucianism was a syncretic philosophy, which incorporated the ideas of different Chinese philosophical traditions, including Buddhism and Taoism. Neo-Confucianism came to dominate the education system during the
Song dynasty The Song dynasty (; ; 960–1279) was an imperial dynasty of China that began in 960 and lasted until 1279. The dynasty was founded by Emperor Taizu of Song following his usurpation of the throne of the Later Zhou. The Song conquered the rest ...
(960–1297), and its ideas served as the philosophical basis of the
imperial exams The imperial examination (; lit. "subject recommendation") refers to a civil-service examination system in Imperial China, administered for the purpose of selecting candidates for the state bureaucracy. The concept of choosing bureaucrats by ...
for the scholar official class. Some of the most important Neo-Confucian thinkers are the Tang scholars
Han Yu Han Yu (; 76825 December 824), courtesy name Tuizhi (), and commonly known by his posthumous name Han Wengong (韓文公), was a Chinese essayist, poet, philosopher, and politician during the Tang dynasty who significantly influenced the devel ...
and
Li Ao Li Ao (, also spelled Lee Ao; 25 April 1935 – 18 March 2018) was a Chinese writer, social commentator, historian and independent politician based in Taiwan. Li has been called one of the most important modern East Asian essayists today; his ...
as well as the Song thinkers
Zhou Dunyi Zhou Dunyi (; 1017–1073) was a Chinese cosmologist, philosopher, and writer during the Song dynasty. He conceptualized the Neo-Confucian cosmology of the day, explaining the relationship between human conduct and universal forces. In this wa ...
(1017–1073) and
Zhu Xi Zhu Xi (; ; October 18, 1130 – April 23, 1200), formerly romanized Chu Hsi, was a Chinese calligrapher, historian, philosopher, poet, and politician during the Song dynasty. Zhu was influential in the development of Neo-Confucianism. He con ...
(1130–1200). Zhu Xi compiled the Confucian canon, which consists of the
Four Books The Four Books and Five Classics () are the authoritative books of Confucianism, written in China before 300 BCE. The Four Books and the Five Classics are the most important classics of Chinese Confucianism. Four Books The Four Books () are C ...
(the ''
Great Learning The ''Great Learning'' or ''Daxue'' was one of the "Four Books" in Confucianism attributed to one of Confucius' disciples, Zengzi. The ''Great Learning'' had come from a chapter in the ''Book of Rites'' which formed one of the Five Classics. I ...
'', the ''
Doctrine of the Mean The ''Doctrine of the Mean'' or ''Zhongyong'' is one of the Four Books of classical Chinese philosophy and a central doctrine of Confucianism. The text is attributed to Zisi (Kong Ji), the only grandson of Confucius (Kong Zi). It was originall ...
'', the ''
Analects The ''Analects'' (; ; Old Chinese: '' ŋ(r)aʔ''; meaning "Selected Sayings"), also known as the ''Analects of Confucius'', the ''Sayings of Confucius'', or the ''Lun Yu'', is an ancient Chinese book composed of a large collection of sayings a ...
'' of Confucius, and the ''
Mencius Mencius ( ); born Mèng Kē (); or Mèngzǐ (; 372–289 BC) was a Chinese Confucianism, Confucian Chinese philosophy, philosopher who has often been described as the "second Sage", that is, second to Confucius himself. He is part of Confuc ...
''). The Ming scholar
Wang Yangming Wang Shouren (, 26 October 1472 – 9 January 1529), courtesy name Bo'an (), art name Yangmingzi (), usually referred to as Wang Yangming (), was a Chinese calligrapher, general, philosopher, politician, and writer during the Ming dynasty ...
(1472–1529) is a later but important philosopher of this tradition as well. Buddhism began arriving in China during the Han Dynasty, through a gradual Silk road transmission, and through native influences developed distinct Chinese forms (such as Chan/
Zen Zen ( zh, t=禪, p=Chán; ja, text= 禅, translit=zen; ko, text=선, translit=Seon; vi, text=Thiền) is a school of Mahayana Buddhism that originated in China during the Tang dynasty, known as the Chan School (''Chánzong'' 禪宗), and ...
) which spread throughout the
East Asian cultural sphere The East Asian cultural sphere, also known as the Sinosphere, the Sinic world, the Sinitic world, the Chinese cultural sphere, the Chinese character sphere encompasses multiple countries in East Asia and Southeast Asia that were historically ...
. Chinese culture was highly influential on the traditions of other East Asian states, and its philosophy directly influenced
Korean philosophy Korean philosophy focuses on a totality of world view. Some aspects of Shamanism, Buddhism, and Neo-Confucianism were integrated into Korean philosophy. Traditional Korean thought has been influenced by a number of religious and philosophical ...
,
Vietnamese philosophy Vietnamese philosophy includes both traditional Confucian philosophy, Vietnamese local religious traditions, and later philosophy introducing French, Marxist, Catholic and other influences. Confucianism in Vietnam Confucianism entered Vietnam ...
and
Japanese philosophy Japanese philosophy has historically been a fusion of both indigenous Shinto and continental religions, such as Buddhism, Taoism and Confucianism. Formerly heavily influenced by both Chinese philosophy and Indian philosophy, as with Mitogaku and ...
. During later Chinese dynasties like the
Ming Dynasty The Ming dynasty (), officially the Great Ming, was an Dynasties in Chinese history, imperial dynasty of China, ruling from 1368 to 1644 following the collapse of the Mongol Empire, Mongol-led Yuan dynasty. The Ming dynasty was the last ort ...
(1368–1644), as well as in the Korean
Joseon dynasty Joseon (; ; Middle Korean: 됴ᇢ〯션〮 Dyǒw syéon or 됴ᇢ〯션〯 Dyǒw syěon), officially the Great Joseon (; ), was the last dynastic kingdom of Korea, lasting just over 500 years. It was founded by Yi Seong-gye in July 1392 and re ...
(1392–1897), a resurgent
Neo-Confucianism Neo-Confucianism (, often shortened to ''lǐxué'' 理學, literally "School of Principle") is a moral, ethical, and metaphysical Chinese philosophy Chinese philosophy originates in the Spring and Autumn period () and Wa ...
led by thinkers such as
Wang Yangming Wang Shouren (, 26 October 1472 – 9 January 1529), courtesy name Bo'an (), art name Yangmingzi (), usually referred to as Wang Yangming (), was a Chinese calligrapher, general, philosopher, politician, and writer during the Ming dynasty ...
(1472–1529) became the dominant school of thought and was promoted by the imperial state. In Japan, the
Tokugawa shogunate The Tokugawa shogunate (, Japanese 徳川幕府 ''Tokugawa bakufu''), also known as the , was the military government of Japan during the Edo period from 1603 to 1868. Nussbaum, Louis-Frédéric. (2005)"''Tokugawa-jidai''"in ''Japan Encyclopedia ...
(1603–1867) was also strongly influenced by Confucian philosophy. Confucianism continues to influence the ideas and worldview of the nations of the
Chinese cultural sphere The East Asian cultural sphere, also known as the Sinosphere, the Sinic world, the Sinitic world, the Chinese cultural sphere, the Chinese character sphere encompasses multiple countries in East Asia and Southeast Asia that were historically ...
today. In the Modern era, Chinese thinkers incorporated ideas from Western philosophy.
Chinese Marxist philosophy Chinese Marxist philosophy is the philosophy of dialectical materialism that was introduced into China in the early 1900s and continues in the Chinese academia to the current day. Marxist philosophy was initially imported into China between 1900 ...
developed under the influence of
Mao Zedong Mao Zedong pronounced ; also romanised traditionally as Mao Tse-tung. (26 December 1893 – 9 September 1976), also known as Chairman Mao, was a Chinese communist revolutionary who was the founder of the People's Republic of China (PRC) ...
, while a Chinese pragmatism developed under
Hu Shih Hu Shih (; 17 December 1891 – 24 February 1962), also known as Hu Suh in early references, was a Chinese diplomat, essayist, literary scholar, philosopher, and politician. Hu is widely recognized today as a key contributor to Chinese libera ...
. The old traditional philosophies also began to reassert themselves in the 20th century. For example,
New Confucianism New Confucianism () is an intellectual movement of Confucianism that began in the early 20th century in Republic of China (1912–1949), Republican China, and further developed in post-Mao era People's Republic of China, contemporary China. It ...
, led by figures such as
Xiong Shili Xiong Shili (, 1885 – May 23, 1968) was a Chinese essayist and philosopher whose major work ''A New Treatise on Vijñaptimātra'' (新唯識論, ''Xin Weishi Lun'') is a Confucian critique of the Buddhist ''Vijñapti-mātra'' "consciousness ...
, has become quite influential. Likewise,
Humanistic Buddhism Humanistic Buddhism () is a modern philosophy practiced by Buddhist groups originating from Chinese Buddhism which places an emphasis on integrating Buddhist practices into everyday life and shifting the focus of ritual from the dead to the li ...
is a recent modernist Buddhist movement. Modern Japanese thought meanwhile developed under strong Western influences such as the study of Western Sciences (
Rangaku ''Rangaku'' (Kyūjitai: /Shinjitai: , literally "Dutch learning", and by extension "Western learning") is a body of knowledge developed by Japan through its contacts with the Dutch enclave of Dejima, which allowed Japan to keep abreast of Wester ...
) and the modernist
Meirokusha The was an intellectual society in Meiji period Japan that published social-criticism journal . Proposed by statesman Mori Arinori in 1873 (six years after the Meiji Restoration) and officially formed on 1 February 1874, the Meirokusha was i ...
intellectual society, which drew from European enlightenment thought and promoted liberal reforms as well as Western philosophies like Liberalism and Utilitarianism. Another trend in modern Japanese philosophy was the "National Studies" (
Kokugaku ''Kokugaku'' ( ja, 國學, label=Kyūjitai, ja, 国学, label=Shinjitai; literally "national study") was an academic movement, a school of Japanese philology and philosophy originating during the Tokugawa period. Kokugaku scholars worked to refo ...
) tradition. This intellectual trend sought to study and promote ancient Japanese thought and culture. Kokugaku thinkers such as
Motoori Norinaga was a Japanese scholar of ''Kokugaku'' active during the Edo period. He is conventionally ranked as one of the Four Great Men of Kokugaku (nativist) studies. Life Norinaga was born in what is now Matsusaka in Ise Province (now part of Mie Pre ...
sought to return to a pure Japanese tradition which they called
Shinto Shinto () is a religion from Japan. Classified as an East Asian religion by scholars of religion, its practitioners often regard it as Japan's indigenous religion and as a nature religion. Scholars sometimes call its practitioners ''Shintois ...
that they saw as untainted by foreign elements. During the 20th century, the
Kyoto School The is the name given to the Japanese philosophical movement centered at Kyoto University that assimilated Western philosophy and religious ideas and used them to reformulate religious and moral insights unique to the East Asian cultural tradit ...
, an influential and unique Japanese philosophical school, developed from Western
phenomenology Phenomenology may refer to: Art * Phenomenology (architecture), based on the experience of building materials and their sensory properties Philosophy * Phenomenology (philosophy), a branch of philosophy which studies subjective experiences and a ...
and Medieval Japanese Buddhist philosophy such as that of Dogen.


African philosophy

African philosophy is philosophy produced by
African people The population of Africa has grown rapidly over the past century and consequently shows a large youth bulge, further reinforced by a low life expectancy of below 50 years in some African countries. Total population as of 2020 is estimated at ...
, philosophy that presents African worldviews, ideas and themes, or philosophy that uses distinct African philosophical methods. Modern African thought has been occupied with
Ethnophilosophy Ethnophilosophy is the study of indigenous philosophical systems. The implicit concept is that a specific culture can have a philosophy that is not applicable and accessible to all peoples and cultures in the world; however, this concept is disputed ...
, that is, defining the very meaning of African philosophy and its unique characteristics and what it means to be
African African or Africans may refer to: * Anything from or pertaining to the continent of Africa: ** People who are native to Africa, descendants of natives of Africa, or individuals who trace their ancestry to indigenous inhabitants of Africa *** Ethn ...
. During the 17th century,
Ethiopian philosophy Ethiopian philosophy or Abyssinian philosophy is the philosophical corpus of the territories of present-day Ethiopia and Eritrea. Besides via oral tradition, it was preserved early in written form through Ge'ez manuscripts. This philosophy occupi ...
developed a robust literary tradition as exemplified by Zera Yacob. Another early African philosopher was
Anton Wilhelm Amo Anton Wilhelm Amo or Anthony William Amo (c. 1703 – c. 1759) was an African philosopher originally from what is now Ghana. Amo was a professor at the universities of Halle and Jena in Germany after studying there. He was brought to Germany by ...
(–1759) who became a respected philosopher in Germany. Distinct African philosophical ideas include
Ujamaa Ujamaa ( in Swahili) was a socialist ideology that formed the basis of Julius Nyerere's social and economic development policies in Tanzania after it gained independence from Britain in 1961. More broadly, ujamaa may mean "cooperative economics ...
, the
Bantu Bantu may refer to: *Bantu languages, constitute the largest sub-branch of the Niger–Congo languages *Bantu peoples, over 400 peoples of Africa speaking a Bantu language * Bantu knots, a type of African hairstyle *Black Association for National ...
idea of 'Force',
Négritude ''Négritude'' (from French "Nègre" and "-itude" to denote a condition that can be translated as "Blackness") is a framework of critique and literary theory, developed mainly by francophone intellectuals, writers, and politicians of the African ...
,
Pan-Africanism Pan-Africanism is a worldwide movement that aims to encourage and strengthen bonds of solidarity between all Indigenous and diaspora peoples of African ancestry. Based on a common goal dating back to the Atlantic slave trade, the movement exte ...
and
Ubuntu Ubuntu ( ) is a Linux distribution based on Debian and composed mostly of free and open-source software. Ubuntu is officially released in three editions: ''Desktop'', ''Server'', and ''Core'' for Internet of things devices and robots. All the ...
. Contemporary African thought has also seen the development of Professional philosophy and of
Africana philosophy Africana philosophy is the work of philosophers of African descent and others whose work deals with the subject matter of the African diaspora. The name does not refer to a particular philosophy, philosophical system, method, or tradition. Rather ...
, the philosophical literature of the
African diaspora The African diaspora is the worldwide collection of communities descended from native Africans or people from Africa, predominantly in the Americas. The term most commonly refers to the descendants of the West and Central Africans who were e ...
which includes currents such as
black existentialism Black existentialism or Africana critical theory is a school of thought that "critiques domination and affirms the empowerment of Black people in the world".Magnus O. Bassey"What Is Africana Critical Theory or Black Existential Philosophy?" in: ''Jo ...
by
African-Americans African Americans (also referred to as Black Americans and Afro-Americans) are an ethnic group consisting of Americans with partial or total ancestry from sub-Saharan Africa. The term "African American" generally denotes descendants of ensl ...
. Some modern African thinkers have been influenced by
Marxism Marxism is a Left-wing politics, left-wing to Far-left politics, far-left method of socioeconomic analysis that uses a Materialism, materialist interpretation of historical development, better known as historical materialism, to understand S ...
,
African-American literature African American literature is the body of literature produced in the United States by writers of African descent. It begins with the works of such late 18th-century writers as Phillis Wheatley. Before the high point of slave narratives, African-A ...
,
Critical theory A critical theory is any approach to social philosophy that focuses on society and culture to reveal, critique and challenge power structures. With roots in sociology and literary criticism, it argues that social problems stem more from soci ...
,
Critical race theory Critical race theory (CRT) is a cross-disciplinary examination, by social and civil-rights scholars and activists, of how laws, social and political movements, and media shape, and are shaped by, social conceptions of race and ethnicity. Goa ...
,
Postcolonialism Postcolonialism is the critical academic study of the cultural, political and economic legacy of colonialism and imperialism, focusing on the impact of human control and exploitation of colonized people and their lands. More specifically, it is a ...
and
Feminism Feminism is a range of socio-political movements and ideologies that aim to define and establish the political, economic, personal, and social equality of the sexes. Feminism incorporates the position that society prioritizes the male po ...
.


Indigenous American philosophy

Indigenous-American philosophical thought consists of a wide variety of beliefs and traditions among different American cultures. Among some of U.S. Native American communities, there is a belief in a metaphysical principle called the '
Great Spirit The Great Spirit is the concept of a life force, a Supreme Being or god known more specifically as Wakan Tanka in Lakota,Ostler, Jeffry. ''The Plains Sioux and U.S. Colonialism from Lewis and Clark to Wounded Knee''. Cambridge University Press, ...
' (
Siouan Siouan or Siouan–Catawban is a language family of North America that is located primarily in the Great Plains, Ohio and Mississippi valleys and southeastern North America with a few other languages in the east. Name Authors who call the entire ...
: '' wakȟáŋ tȟáŋka''; Algonquian: ''gitche manitou''). Another widely shared concept was that of ''
orenda Orenda is the Iroquois name for a certain spiritual energy inherent in people and their natural environment, environment. It is an "extraordinary invisible power believed by the Iroquois Native Americans to pervade in varying degrees in all ani ...
'' ('spiritual power'). According to Whiteley (1998), for the Native Americans, "mind is critically informed by transcendental experience (dreams, visions and so on) as well as by reason." The practices to access these transcendental experiences are termed ''
shamanism Shamanism is a religious practice that involves a practitioner (shaman) interacting with what they believe to be a Spirit world (Spiritualism), spirit world through Altered state of consciousness, altered states of consciousness, such as tranc ...
''. Another feature of the indigenous American worldviews was their extension of ethics to non-human animals and plants. In
Mesoamerica Mesoamerica is a historical region and cultural area in southern North America and most of Central America. It extends from approximately central Mexico through Belize, Guatemala, El Salvador, Honduras, Nicaragua, and northern Costa Rica. W ...
, Nahua philosophy was an intellectual tradition developed by individuals called ''
tlamatini ''Tlamatini'' (plural ''tlamatinime'') is a Nahuatl language word meaning "someone who knows something", generally translated as "wise man". The word is analyzable as derived from the transitive verb ''mati'' "to know" with the prefix ''tla-'' ...
'' ('those who know something') and its ideas are preserved in various
Aztec codices Aztec codices ( nah, Mēxihcatl āmoxtli , sing. ''codex'') are Mesoamerican manuscripts made by the pre-Columbian Aztec, and their Nahuatl-speaking descendants during the colonial period in Mexico. History Before the start of the Sp ...
and fragmentary texts. Some of these philosophers are known by name, such as
Nezahualcoyotl Nezahualcoyotl may refer to: * Nezahualcoyotl (tlatoani), the ruler of Texcoco * Ciudad Nezahualcóyotl, a city in the State of Mexico * Nezahualcóyotl metro station, in Mexico City * The Nezahualcóyotl Award, a literary prize in Mexico * Nezah ...
,
Aquiauhtzin Tecayehuatzin (Aquiauhtzin) (1430-1500) was a Nahuatl noble poet born in Ayapango, Mexico. Although a sought-out composer of poetry, few of his poem Poetry (derived from the Greek ''poiesis'', "making"), also called verse, is a form of lit ...
,
Xayacamach Xayacamach of Tizatlan was an Aztec poet from the Pre-Columbian state of Tlaxcallan, born between 1450 and 1455. He was the son of the "Señor de Aztahua de Tizatlan" (Lord of Aztahua of Tizatlan). He took his father's place as governor, and ass ...
,
Tochihuitzin coyolchiuhqui Tochihuitzin, son of Itzcoatl, was ruler of Teotlatzinco. Tochihuitzin and his brothers helped save Nezahualcoyotl from being captured by the Azcapotzalca that Nezahualcoyotl found refuge with the Mexica. According to Cronica Mexicayotl, Tochihui ...
and Cuauhtencoztli. These authors were also poets and some of their work has survived in the original
Nahuatl Nahuatl (; ), Aztec, or Mexicano is a language or, by some definitions, a group of languages of the Uto-Aztecan language family. Varieties of Nahuatl are spoken by about Nahua peoples, most of whom live mainly in Central Mexico and have smaller ...
. Aztec philosophers developed theories of metaphysics, epistemology, values, and aesthetics. Aztec ethics was focused on seeking ''tlamatiliztli'' ('knowledge', 'wisdom') which was based on moderation and balance in all actions as in the
Nahua The Nahuas () are a group of the indigenous people of Mexico, El Salvador, Guatemala, Honduras, and Nicaragua. They comprise the largest indigenous group in Mexico and second largest in El Salvador. The Mexica (Aztecs) were of Nahua ethnicity, a ...
proverb "the middle good is necessary". The Nahua worldview posited the concept of an ultimate universal energy or force called ''
Ōmeteōtl () ("Two gods") is a name used to refer to the pair of Aztec deities and , also known as and . translates as "two" or "dual" in Nahuatl and translates as "god". The existence of such a concept and its significance is a matter of dispute am ...
'' ('Dual Cosmic Energy') which sought a way to live in balance with a constantly changing, "slippery" world. The theory of ''
Teotl Teotl () is a Nahuatl term for sacredness or divinity that is sometimes translated as "god". For the Aztecs was the metaphysical omnipresence upon which their religious philosophy was based. As described by James Maffie, "is essentially power: c ...
'' can be seen as a form of
Pantheism Pantheism is the belief that reality, the universe and the cosmos are identical with divinity and a supreme supernatural being or entity, pointing to the universe as being an immanent creator deity still expanding and creating, which has ex ...
. According to James Maffie, Nahua metaphysics posited that teotl is "a single, vital, dynamic, vivifying, eternally self-generating and self-conceiving as well as self-regenerating and self-reconceiving sacred energy or force". This force was seen as the all-encompassing life force of the universe and as the universe itself. The
Inca civilization The Incas were most notable for establishing the Inca Empire in Pre-Columbian America, which was centered in modern day South America in Peru and Chile. It was about 2,500 miles from the northern to southern tip. The civilization lasted from 14 ...
also had an elite class of philosopher-scholars termed the ''amawtakuna'' or ''amautas'' who were important in the
Inca education Inca education during the time of the Inca Empire was divided into two principal spheres: education for the upper classes and education for the general population. The royal classes and a few specially-chosen individuals from the provinces of the E ...
system as teachers of philosophy, theology, astronomy, poetry, law, music, morality and history. Young Inca nobles were educated in these disciplines at the state college of Yacha-huasi in
Cuzco Cusco, often spelled Cuzco (; qu, Qusqu ()), is a city in Southeastern Peru near the Urubamba Valley of the Andes mountain range. It is the capital of the Cusco Region and of the Cusco Province. The city is the seventh most populous in Peru; ...
, where they also learned the art of the
quipu ''Quipu'' (also spelled ''khipu'') are recording devices fashioned from strings historically used by a number of cultures in the region of Andean South America. A ''quipu'' usually consisted of cotton or camelid fiber strings. The Inca people u ...
. Incan philosophy (as well as the broader category of Andean thought) held that the universe is animated by a single dynamic life force (sometimes termed ''camaquen'' or ''camac'', as well as ''upani'' and ''amaya''). This singular force also arises as a set of dual complementary yet opposite forces. These "complementary opposites" are called
yanantin Yanantin is one of the best known and most defining characteristics of indigenous South American Andean thought and exemplifies Andean adherence to a philosophical model based in what is often referred to as a " dualism of complementary terms" or ...
and masintin. They are expressed as various polarities or dualities (such as male–female, dark–light, life and death, above and below) which interdependently contribute to the harmonious whole that is the universe through the process of reciprocity and mutual exchange called ''ayni''. The Inca worldview also included the belief in a
creator God A creator deity or creator god (often called the Creator) is a deity responsible for the creation of the Earth, world, and universe in human religion and mythology. In monotheism, the single God is often also the creator. A number of monolatris ...
(
Viracocha Viracocha is the great creator deity in the pre-Inca and Inca mythology in the Andes region of South America. Full name and some spelling alternatives are Wiracocha, Apu Qun Tiqsi Wiraqutra, and Con-Tici (also spelled Kon-Tiki, the source of the ...
) and
reincarnation Reincarnation, also known as rebirth or transmigration, is the philosophical or religious concept that the non-physical essence of a living being begins a new life in a different physical form or body after biological death. Resurrection is a ...
.


Branches of philosophy

Philosophical questions can be grouped into various branches. These groupings allow philosophers to focus on a set of similar topics and interact with other thinkers who are interested in the same questions. These divisions are neither exhaustive nor mutually exclusive. (A philosopher might specialize in
Kantian Kantianism is the philosophy of Immanuel Kant, a German philosopher born in Königsberg, Prussia (now Kaliningrad, Russia). The term ''Kantianism'' or ''Kantian'' is sometimes also used to describe contemporary positions in philosophy of mind, ...
epistemology, or
Platonic Plato's influence on Western culture was so profound that several different concepts are linked by being called Platonic or Platonist, for accepting some assumptions of Platonism, but which do not imply acceptance of that philosophy as a whole. It ...
aesthetics, or modern political philosophy). Furthermore, these philosophical inquiries sometimes overlap with each other and with other inquiries such as science, religion or mathematics.


Aesthetics

Aesthetics is the "critical reflection on art, culture and
nature Nature, in the broadest sense, is the physics, physical world or universe. "Nature" can refer to the phenomenon, phenomena of the physical world, and also to life in general. The study of nature is a large, if not the only, part of science. ...
". It addresses the nature of
art Art is a diverse range of human activity, and resulting product, that involves creative or imaginative talent expressive of technical proficiency, beauty, emotional power, or conceptual ideas. There is no generally agreed definition of wha ...
,
beauty Beauty is commonly described as a feature of objects that makes these objects pleasurable to perceive. Such objects include landscapes, sunsets, humans and works of art. Beauty, together with art and taste, is the main subject of aesthetics, o ...
and
taste The gustatory system or sense of taste is the sensory system that is partially responsible for the perception of taste (flavor). Taste is the perception produced or stimulated when a substance in the mouth reacts chemically with taste receptor ...
, enjoyment, emotional values, perception and the creation and appreciation of beauty. It is more precisely defined as the study of sensory or sensori-emotional values, sometimes called
judgment Judgement (or US spelling judgment) is also known as ''adjudication'', which means the evaluation of evidence to decision-making, make a decision. Judgement is also the ability to make considered decisions. The term has at least five distinct u ...
s of
sentiment Sentiment may refer to: *Feelings, and emotions *Public opinion, also called sentiment *Sentimentality, an appeal to shallow, uncomplicated emotions at the expense of reason *Sentimental novel, an 18th-century literary genre *Market sentiment, opt ...
and taste. Its major divisions are art theory,
literary theory Literary theory is the systematic study of the nature of literature and of the methods for literary analysis. Culler 1997, p.1 Since the 19th century, literary scholarship includes literary theory and considerations of intellectual history, mo ...
,
film theory Film theory is a set of scholarly approaches within the academic discipline of film or cinema studies that began in the 1920s by questioning the formal essential attributes of motion pictures; and that now provides conceptual frameworks for und ...
and
music theory Music theory is the study of the practices and possibilities of music. ''The Oxford Companion to Music'' describes three interrelated uses of the term "music theory". The first is the "rudiments", that are needed to understand music notation (ke ...
. An example from art theory is to discern the set of principles underlying the work of a particular artist or artistic movement such as the
Cubist Cubism is an early-20th-century avant-garde art movement that revolutionized European painting and sculpture, and inspired related movements in music, literature and architecture. In Cubist artwork, objects are analyzed, broken up and reassemble ...
aesthetic.


Ethics

Ethics, also known as moral philosophy, studies what constitutes good and bad conduct, right and
wrong A wrong (from Old English – 'crooked') is an act that is illegal or immoral. Legal wrongs are usually quite clearly defined in the law of a state and/or jurisdiction. They can be divided into civil wrongs and crimes (or ''criminal offenses'') ...
values In ethics and social sciences, value denotes the degree of importance of something or action, with the aim of determining which actions are best to do or what way is best to live (normative ethics in ethics), or to describe the significance of dif ...
, and
good and evil In religion, ethics, philosophy, and psychology "good and evil" is a very common dichotomy. In cultures with Manichaean and Abrahamic religious influence, evil is perceived as the dualistic antagonistic opposite of good, in which good shoul ...
. Its primary investigations include exploring how to live a good life and identifying standards of
morality Morality () is the differentiation of intentions, decisions and actions between those that are distinguished as proper (right) and those that are improper (wrong). Morality can be a body of standards or principles derived from a code of cond ...
. It also includes investigating whether there ''is'' a best way to live or a universal moral standard, and if so, how we come to learn about it. The main branches of ethics are
normative ethics Normative ethics is the study of ethical behaviour and is the branch of philosophical ethics that investigates the questions that arise regarding how one ought to act, in a moral sense. Normative ethics is distinct from meta-ethics in that the ...
,
meta-ethics In metaphilosophy and ethics, meta-ethics is the study of the nature, scope, and meaning of moral judgment. It is one of the three branches of ethics generally studied by philosophers, the others being normative ethics (questions of how one ought ...
and
applied ethics Applied ethics refers to the practical aspect of moral considerations. It is ethics with respect to real-world actions and their moral considerations in the areas of private and public life, the professions, health, technology, law, and leadersh ...
. The three main views in ethics about what constitute moral actions are: *
Consequentialism In ethical philosophy, consequentialism is a class of normative, teleological ethical theories that holds that the consequences of one's conduct are the ultimate basis for judgment about the rightness or wrongness of that conduct. Thus, from a ...
, which judges actions based on their consequences. One such view is
utilitarianism In ethical philosophy, utilitarianism is a family of normative ethical theories that prescribe actions that maximize happiness and well-being for all affected individuals. Although different varieties of utilitarianism admit different charact ...
, which judges actions based on the net happiness (or pleasure) and/or lack of suffering (or pain) that they produce. *
Deontology In moral philosophy, deontological ethics or deontology (from Greek: + ) is the normative ethical theory that the morality of an action should be based on whether that action itself is right or wrong under a series of rules and principles, ra ...
, which judges actions based on whether they are in accordance with one's moral duty. In the standard form defended by
Immanuel Kant Immanuel Kant (, , ; 22 April 1724 – 12 February 1804) was a German philosopher and one of the central Enlightenment thinkers. Born in Königsberg, Kant's comprehensive and systematic works in epistemology, metaphysics, ethics, and ...
, deontology is concerned with whether a choice respects the moral agency of other people, regardless of its consequences. *
Virtue ethics Virtue ethics (also aretaic ethics, from Greek ἀρετή arete_(moral_virtue).html"_;"title="'arete_(moral_virtue)">aretḗ''_is_an_approach_to_ethics_that_treats_the_concept_of_virtue.html" ;"title="arete_(moral_virtue)">aretḗ''.html" ;" ...
, which judges actions based on the moral character of the agent who performs them and whether they conform to what an ideally virtuous agent would do.


Epistemology

Epistemology Epistemology (; ), or the theory of knowledge, is the branch of philosophy concerned with knowledge. Epistemology is considered a major subfield of philosophy, along with other major subfields such as ethics, logic, and metaphysics. Episte ...
is the branch of philosophy that studies
knowledge Knowledge can be defined as awareness of facts or as practical skills, and may also refer to familiarity with objects or situations. Knowledge of facts, also called propositional knowledge, is often defined as true belief that is distinc ...
. Epistemologists examine putative sources of knowledge, including
perceptual experience Experience refers to Consciousness, conscious events in general, more specifically to perceptions, or to the practical knowledge and familiarity that is produced by these conscious processes. Understood as a conscious event in the widest sense, ex ...
,
reason Reason is the capacity of consciously applying logic by drawing conclusions from new or existing information, with the aim of seeking the truth. It is closely associated with such characteristically human activities as philosophy, science, ...
,
memory Memory is the faculty of the mind by which data or information is encoded, stored, and retrieved when needed. It is the retention of information over time for the purpose of influencing future action. If past events could not be remembered, ...
, and
testimony In law and in religion, testimony is a solemn attestation as to the truth of a matter. Etymology The words "testimony" and "testify" both derive from the Latin word ''testis'', referring to the notion of a disinterested third-party witness. La ...
. They also investigate questions about the nature of
truth Truth is the property of being in accord with fact or reality.Merriam-Webster's Online Dictionarytruth 2005 In everyday language, truth is typically ascribed to things that aim to represent reality or otherwise correspond to it, such as beliefs ...
,
belief A belief is an attitude that something is the case, or that some proposition is true. In epistemology, philosophers use the term "belief" to refer to attitudes about the world which can be either true or false. To believe something is to take i ...
, justification, and
rationality Rationality is the quality of being guided by or based on reasons. In this regard, a person acts rationally if they have a good reason for what they do or a belief is rational if it is based on strong evidence. This quality can apply to an abil ...
.
Philosophical skepticism Philosophical skepticism ( UK spelling: scepticism; from Greek σκέψις ''skepsis'', "inquiry") is a family of philosophical views that question the possibility of knowledge. It differs from other forms of skepticism in that it even reject ...
, which raises doubts about some or all claims to knowledge, has been a topic of interest throughout the history of philosophy. It arose early in
Pre-Socratic philosophy Pre-Socratic philosophy, also known as early Greek philosophy, is ancient Greek philosophy before Socrates. Pre-Socratic philosophers were mostly interested in cosmology, the beginning and the substance of the universe, but the inquiries of thes ...
and became formalized with
Pyrrho Pyrrho of Elis (; grc, Πύρρων ὁ Ἠλεῖος, Pyrrhо̄n ho Ēleios; ), born in Elis, Greece, was a Greek philosopher of Classical antiquity, credited as being the first Greek skeptic philosopher and founder of Pyrrhonism. Life ...
, the founder of the earliest Western school of philosophical skepticism. It features prominently in the works of modern philosophers
René Descartes René Descartes ( or ; ; Latinized: Renatus Cartesius; 31 March 1596 – 11 February 1650) was a French philosopher, scientist, and mathematician, widely considered a seminal figure in the emergence of modern philosophy and science. Mathem ...
and
David Hume David Hume (; born David Home; 7 May 1711 NS (26 April 1711 OS) – 25 August 1776) Cranston, Maurice, and Thomas Edmund Jessop. 2020 999br>David Hume" ''Encyclopædia Britannica''. Retrieved 18 May 2020. was a Scottish Enlightenment philo ...
and has remained a central topic in contemporary epistemological debates. One of the most notable epistemological debates is between
empiricism In philosophy, empiricism is an epistemological theory that holds that knowledge or justification comes only or primarily from sensory experience. It is one of several views within epistemology, along with rationalism and skepticism. Empir ...
and
rationalism In philosophy, rationalism is the epistemological view that "regards reason as the chief source and test of knowledge" or "any view appealing to reason as a source of knowledge or justification".Lacey, A.R. (1996), ''A Dictionary of Philosophy' ...
. Empiricism places emphasis on observational evidence via sensory experience as the source of knowledge. Empiricism is associated with
a posteriori knowledge ("from the earlier") and ("from the later") are Latin phrases used in philosophy to distinguish types of knowledge, justification, or argument by their reliance on empirical evidence or experience. knowledge is independent from current ex ...
, which is obtained through experience (such as
scientific knowledge Science is a systematic endeavor that builds and organizes knowledge in the form of testable explanations and predictions about the universe. Science may be as old as the human species, and some of the earliest archeological evidence for ...
). Rationalism places emphasis on reason as a source of knowledge. Rationalism is associated with
a priori knowledge ("from the earlier") and ("from the later") are Latin phrases used in philosophy to distinguish types of knowledge, justification, or argument by their reliance on empirical evidence or experience. knowledge is independent from current ex ...
, which is independent of experience (such as
logic Logic is the study of correct reasoning. It includes both formal and informal logic. Formal logic is the science of deductively valid inferences or of logical truths. It is a formal science investigating how conclusions follow from premises ...
and
mathematics Mathematics is an area of knowledge that includes the topics of numbers, formulas and related structures, shapes and the spaces in which they are contained, and quantities and their changes. These topics are represented in modern mathematics ...
). One central debate in contemporary epistemology is about the conditions required for a
belief A belief is an attitude that something is the case, or that some proposition is true. In epistemology, philosophers use the term "belief" to refer to attitudes about the world which can be either true or false. To believe something is to take i ...
to constitute knowledge, which might include
truth Truth is the property of being in accord with fact or reality.Merriam-Webster's Online Dictionarytruth 2005 In everyday language, truth is typically ascribed to things that aim to represent reality or otherwise correspond to it, such as beliefs ...
and justification. This debate was largely the result of attempts to solve the
Gettier problem The Gettier problem, in the field of epistemology, is a landmark philosophical problem concerning the understanding of descriptive knowledge. Attributed to American philosopher Edmund Gettier, Gettier-type counterexamples (called "Gettier-cases") ...
. Another common subject of contemporary debates is the
regress problem In epistemology, the regress argument is the argument that any proposition requires a justification. However, any justification itself requires support. This means that any proposition whatsoever can be endlessly (infinitely) questioned, result ...
, which occurs when trying to offer proof or justification for any belief, statement, or proposition. The problem is that whatever the source of justification may be, that source must either be without justification (in which case it must be treated as an arbitrary
foundation Foundation may refer to: * Foundation (nonprofit), a type of charitable organization ** Foundation (United States law), a type of charitable organization in the U.S. ** Private foundation, a charitable organization that, while serving a good cause ...
for belief), or it must have some further justification (in which case justification must either be the result of
circular reasoning Circular may refer to: * The shape of a circle * ''Circular'' (album), a 2006 album by Spanish singer Vega * Circular letter (disambiguation) ** Flyer (pamphlet), a form of advertisement * Circular reasoning, a type of logical fallacy * Circular ...
, as in
coherentism In philosophical epistemology, there are two types of coherentism: the coherence theory of truth; and the coherence theory of justification (also known as epistemic coherentism). Coherent truth is divided between an anthropological approach, whic ...
, or the result of an
infinite regress An infinite regress is an infinite series of entities governed by a recursive principle that determines how each entity in the series depends on or is produced by its predecessor. In the epistemic regress, for example, a belief is justified beca ...
, as in
infinitism Infinitism is the view that knowledge may be justified by an infinite chain of reasons. It belongs to epistemology, the branch of philosophy that considers the possibility, nature, and means of knowledge. Epistemological infinitism Since Gettie ...
).


Metaphysics

Metaphysics is the study of the most general features of
reality Reality is the sum or aggregate of all that is real or existent within a system, as opposed to that which is only imaginary. The term is also used to refer to the ontological status of things, indicating their existence. In physical terms, r ...
, such as
existence Existence is the ability of an entity to interact with reality. In philosophy, it refers to the ontology, ontological Property (philosophy), property of being. Etymology The term ''existence'' comes from Old French ''existence'', from Medieval ...
,
time Time is the continued sequence of existence and events that occurs in an apparently irreversible succession from the past, through the present, into the future. It is a component quantity of various measurements used to sequence events, to ...
,
objects Object may refer to: General meanings * Object (philosophy), a thing, being, or concept ** Object (abstract), an object which does not exist at any particular time or place ** Physical object, an identifiable collection of matter * Goal, an ...
and their
properties Property is the ownership of land, resources, improvements or other tangible objects, or intellectual property. Property may also refer to: Mathematics * Property (mathematics) Philosophy and science * Property (philosophy), in philosophy and ...
, wholes and their parts, events, processes and causation and the relationship between
mind The mind is the set of faculties responsible for all mental phenomena. Often the term is also identified with the phenomena themselves. These faculties include thought, imagination, memory, will, and sensation. They are responsible for various m ...
and
body Body may refer to: In science * Physical body, an object in physics that represents a large amount, has mass or takes up space * Body (biology), the physical material of an organism * Body plan, the physical features shared by a group of anima ...
. Metaphysics includes
cosmology Cosmology () is a branch of physics and metaphysics dealing with the nature of the universe. The term ''cosmology'' was first used in English in 1656 in Thomas Blount (lexicographer), Thomas Blount's ''Glossographia'', and in 1731 taken up in ...
, the study of the
world In its most general sense, the term "world" refers to the totality of entities, to the whole of reality or to everything that is. The nature of the world has been conceptualized differently in different fields. Some conceptions see the worl ...
in its entirety and
ontology In metaphysics, ontology is the philosophical study of being, as well as related concepts such as existence, becoming, and reality. Ontology addresses questions like how entities are grouped into categories and which of these entities exis ...
, the study of
being In metaphysics, ontology is the philosophical study of being, as well as related concepts such as existence, becoming, and reality. Ontology addresses questions like how entities are grouped into categories and which of these entities exis ...
, along with the
philosophy of space and time Philosophy of space and time is the branch of philosophy concerned with the issues surrounding the ontology and epistemology of space and time. While such ideas have been central to philosophy from its inception, the philosophy of space and time wa ...
. A major point of debate is between
realism Realism, Realistic, or Realists may refer to: In the arts *Realism (arts), the general attempt to depict subjects truthfully in different forms of the arts Arts movements related to realism include: *Classical Realism *Literary realism, a move ...
, which holds that there are entities that exist independently of their mental perception, and
idealism In philosophy, the term idealism identifies and describes metaphysical perspectives which assert that reality is indistinguishable and inseparable from perception and understanding; that reality is a mental construct closely connected to ide ...
, which holds that reality is mentally constructed or otherwise immaterial. Metaphysics deals with the topic of
identity Identity may refer to: * Identity document * Identity (philosophy) * Identity (social science) * Identity (mathematics) Arts and entertainment Film and television * ''Identity'' (1987 film), an Iranian film * ''Identity'' (2003 film), ...
.
Essence Essence ( la, essentia) is a polysemic term, used in philosophy and theology as a designation for the property or set of properties that make an entity or substance what it fundamentally is, and which it has by necessity, and without which it ...
is the set of attributes that make an object what it fundamentally is and without which it loses its identity, while
accident An accident is an unintended, normally unwanted event that was not directly caused by humans. The term ''accident'' implies that nobody should be blamed, but the event may have been caused by unrecognized or unaddressed risks. Most researcher ...
is a property that the object has, without which the object can still retain its identity.
Particular In metaphysics, particulars or individuals are usually contrasted with universals. Universals concern features that can be exemplified by various different particulars. Particulars are often seen as concrete, spatiotemporal entities as opposed to a ...
s are objects that are said to exist in space and time, as opposed to
abstract object In metaphysics, the distinction between abstract and concrete refers to a divide between two types of entities. Many philosophers hold that this difference has fundamental metaphysical significance. Examples of concrete objects include plants, hum ...
s, such as numbers, and
universals In metaphysics, a universal is what particular things have in common, namely characteristics or qualities. In other words, universals are repeatable or recurrent entities that can be instantiated or exemplified by many particular things. For exa ...
, which are properties held by multiple particulars, such as redness or a gender. The type of existence, if any, of universals and abstract objects is an issue of debate.


Logic

Logic Logic is the study of correct reasoning. It includes both formal and informal logic. Formal logic is the science of deductively valid inferences or of logical truths. It is a formal science investigating how conclusions follow from premises ...
is the study of reasoning and argument.
Deductive reasoning Deductive reasoning is the mental process of drawing deductive inferences. An inference is deductively valid if its conclusion follows logically from its premises, i.e. if it is impossible for the premises to be true and the conclusion to be fals ...
is when, given certain premises, conclusions are unavoidably implied.
Rules of inference In the philosophy of logic, a rule of inference, inference rule or transformation rule is a logical form consisting of a function which takes premises, analyzes their syntax, and returns a conclusion (or conclusions). For example, the rule of in ...
are used to infer conclusions such as,
modus ponens In propositional logic, ''modus ponens'' (; MP), also known as ''modus ponendo ponens'' (Latin for "method of putting by placing") or implication elimination or affirming the antecedent, is a deductive argument form and rule of inference. ...
, where given "A” and "If A then B", then "B” must be concluded. Because sound reasoning is an essential element of all sciences, social sciences and humanities disciplines, logic became a
formal science Formal science is a branch of science studying disciplines concerned with abstract structures described by formal systems, such as logic, mathematics, statistics, theoretical computer science, artificial intelligence, information theory, ga ...
. Sub-fields include
mathematical logic Mathematical logic is the study of logic, formal logic within mathematics. Major subareas include model theory, proof theory, set theory, and recursion theory. Research in mathematical logic commonly addresses the mathematical properties of for ...
,
philosophical logic Understood in a narrow sense, philosophical logic is the area of logic that studies the application of logical methods to philosophical problems, often in the form of extended logical systems like modal logic. Some theorists conceive philosophical ...
,
modal logic Modal logic is a collection of formal systems developed to represent statements about necessity and possibility. It plays a major role in philosophy of language, epistemology, metaphysics, and natural language semantics. Modal logics extend other ...
,
computational logic Computational logic is the use of logic to perform or reason about computation. It bears a similar relationship to computer science and engineering as mathematical logic bears to mathematics and as philosophical logic bears to philosophy. It is s ...
and non-classical logics. A major question in the philosophy of mathematics is whether mathematical entities are objective and discovered, called mathematical realism, or invented, called mathematical antirealism.


Mind and language

Philosophy of language explores the nature, origins, and use of language. Philosophy of mind explores the nature of the
mind The mind is the set of faculties responsible for all mental phenomena. Often the term is also identified with the phenomena themselves. These faculties include thought, imagination, memory, will, and sensation. They are responsible for various m ...
and its relationship to the body, as typified by disputes between materialism and Dualism (philosophy of mind), dualism. In recent years, this branch has become related to cognitive science.


Philosophy of science

The
philosophy of science Philosophy of science is a branch of philosophy concerned with the foundations, methods, and implications of science. The central questions of this study concern what qualifies as science, the reliability of scientific theories, and the ultim ...
explores the foundations, methods, history, implications and purpose of science. Many of its subdivisions correspond to specific branches of science. For example, philosophy of biology deals specifically with the metaphysical, epistemological and ethical issues in the biomedical and life sciences.


Political philosophy

Political philosophy is the study of government and the relationship of individuals (or families and clans) to communities including the State (polity), state. It includes questions about justice, law, property and the rights and obligations of the citizen. Political philosophy, ethics, and aesthetics are traditionally linked subjects, under the general heading of value theory as they involve a normative or evaluative aspect.


Philosophy of religion

Philosophy of religion deals with questions that involve religion and religious ideas from a philosophically neutral perspective (as opposed to
theology Theology is the systematic study of the nature of the divine and, more broadly, of religious belief. It is taught as an academic discipline, typically in universities and seminaries. It occupies itself with the unique content of analyzing the ...
which begins from religious convictions). Traditionally, religious questions were not seen as a separate field from philosophy proper, and the idea of a separate field only arose in the 19th century. Issues include the existence of God, the relationship between reason and
faith Faith, derived from Latin ''fides'' and Old French ''feid'', is confidence or trust in a person, thing, or In the context of religion, one can define faith as "belief in God or in the doctrines or teachings of religion". Religious people often ...
, questions of religious epistemology, the relationship between religion and science, how to interpret religious experiences, questions about the possibility of an afterlife, the problem of religious language and the existence of souls and responses to religious pluralism and diversity.


Metaphilosophy

Metaphilosophy explores the aims, boundaries and methods of philosophy. It is debated as to whether metaphilosophy is a subject that comes prior to philosophy or whether it is inherently part of philosophy.


Other subdivisions

In section thirteen of his Lives and Opinions of Eminent Philosophers, ''Lives and Opinions of the Eminent Philosophers'', the oldest surviving history of philosophy (3rd century), Diogenes Laërtius presents a three-part division of ancient Greek philosophical inquiry: * Science, Natural philosophy (i.e. physics, from ) was the study of the constitution and processes of transformation in the physical world. * Ethics, Moral philosophy (i.e. ethics, from ) was the study of goodness, right and wrong, justice and virtue. * Metaphysics, Metaphysical philosophy (i.e. logic, from ) was the study of
existence Existence is the ability of an entity to interact with reality. In philosophy, it refers to the ontology, ontological Property (philosophy), property of being. Etymology The term ''existence'' comes from Old French ''existence'', from Medieval ...
, causation,
God In monotheism, monotheistic thought, God is usually viewed as the supreme being, creator deity, creator, and principal object of Faith#Religious views, faith.Richard Swinburne, Swinburne, R.G. "God" in Ted Honderich, Honderich, Ted. (ed)''The Ox ...
,
logic Logic is the study of correct reasoning. It includes both formal and informal logic. Formal logic is the science of deductively valid inferences or of logical truths. It is a formal science investigating how conclusions follow from premises ...
, Universal (metaphysics), forms, and other abstract objects. () In ''Against the Logicians'' the Pyrrhonism, Pyrrhonist philosopher Sextus Empiricus detailed the variety of ways in which the ancient Greek philosophers had divided philosophy, noting that this three-part division was agreed to by Plato, Aristotle, Xenocrates, and the Stoics. The Academic skepticism, Academic Skeptic philosopher
Cicero Marcus Tullius Cicero ( ; ; 3 January 106 BC – 7 December 43 BC) was a Roman statesman, lawyer, scholar, philosopher, and academic skeptic, who tried to uphold optimate principles during the political crises that led to the estab ...
also followed this three-part division. This division is not obsolete, but has changed: ''natural philosophy'' has split into the various natural sciences, especially physics,
astronomy Astronomy () is a natural science that studies astronomical object, celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and chronology of the Universe, evolution. Objects of interest ...
, chemistry, biology, and
cosmology Cosmology () is a branch of physics and metaphysics dealing with the nature of the universe. The term ''cosmology'' was first used in English in 1656 in Thomas Blount (lexicographer), Thomas Blount's ''Glossographia'', and in 1731 taken up in ...
; ''moral philosophy'' has birthed the social sciences, while still including value theory (e.g. ethics,
aesthetics Aesthetics, or esthetics, is a branch of philosophy that deals with the nature of beauty and taste, as well as the philosophy of art (its own area of philosophy that comes out of aesthetics). It examines aesthetic values, often expressed thr ...
,
political philosophy Political philosophy or political theory is the philosophical study of government, addressing questions about the nature, scope, and legitimacy of public agents and institutions and the relationships between them. Its topics include politics, l ...
, etc.); and ''metaphysical philosophy'' has given way to formal sciences such as logic,
mathematics Mathematics is an area of knowledge that includes the topics of numbers, formulas and related structures, shapes and the spaces in which they are contained, and quantities and their changes. These topics are represented in modern mathematics ...
and
philosophy of science Philosophy of science is a branch of philosophy concerned with the foundations, methods, and implications of science. The central questions of this study concern what qualifies as science, the reliability of scientific theories, and the ultim ...
, while still including epistemology, cosmology, etc. For example,
Newton Newton most commonly refers to: * Isaac Newton (1642–1726/1727), English scientist * Newton (unit), SI unit of force named after Isaac Newton Newton may also refer to: Arts and entertainment * ''Newton'' (film), a 2017 Indian film * Newton ( ...
's ''
Mathematical Principles of Natural Philosophy Mathematics is an area of knowledge that includes the topics of numbers, formulas and related structures, shapes and the spaces in which they are contained, and quantities and their changes. These topics are represented in modern mathematics ...
'' (1687), since classified as a book of physics, uses the term ''
natural philosophy Natural philosophy or philosophy of nature (from Latin ''philosophia naturalis'') is the philosophical study of physics Physics is the natural science that studies matter, its fundamental constituents, its motion and behavior throu ...
'' as it was understood at the time, encompassing disciplines such as astronomy,
medicine Medicine is the science and practice of caring for a patient, managing the diagnosis, prognosis, prevention, treatment, palliation of their injury or disease, and promoting their health. Medicine encompasses a variety of health care pract ...
and
physics Physics is the natural science that studies matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. "Physical science is that department of knowledge which r ...
that later became associated with Science, the sciences.


Methods of philosophy

Methods of philosophy are ways of conducting philosophical inquiry. They include techniques for arriving at philosophical knowledge and justifying philosophical claims as well as principles used for choosing between competing theories. A great variety of methods has been employed throughout the history of philosophy. Many of them differ significantly from the methods used in the natural sciences in that they do not use experimental data obtained through measuring equipment. The choice of one's method usually has important implications both for how philosophical theories are constructed and for the arguments cited for or against them. This choice is often guided by epistemological considerations about what constitutes philosophical evidence, how much support it offers, and how to acquire it. Various disagreements on the level of philosophical theories have their source in methodological disagreements and the discovery of new methods has often had important consequences both for how philosophers conduct their research and for what claims they defend. Some philosophers engage in most of their theorizing using one particular method while others employ a wider range of methods based on which one fits the specific problem investigated best. Methodological skepticism is a prominent method of philosophy. It aims to arrive at absolutely certain first principles by using systematic doubt to determine which principles of philosophy are indubitable. The geometrical method tries to build a comprehensive philosophical system based on a small set of such axioms. It does so with the help of deductive reasoning to expand the certainty of its axioms to the system as a whole. Phenomenology (philosophy), Phenomenologists seek certain knowledge about the realm of appearances. They do so by suspending their judgments about the external world in order to focus on how things appear independent of their underlying reality, a technique known as epoché. Conceptual analysis is a well-known method in
analytic philosophy Analytic philosophy is a branch and tradition of philosophy using analysis, popular in the Western world and particularly the Anglosphere, which began around the turn of the 20th century in the contemporary era in the United Kingdom, United Sta ...
. It aims to clarify the meaning of concepts by analyzing them into their fundamental constituents. Another method often employed in analytic philosophy is based on common sense. It starts with commonly accepted
belief A belief is an attitude that something is the case, or that some proposition is true. In epistemology, philosophers use the term "belief" to refer to attitudes about the world which can be either true or false. To believe something is to take i ...
s and tries to draw interesting conclusions from them, which it often employs in a negative sense to criticize philosophical theories that are too far removed from how the average person sees the issue. It is very similar to how ordinary language philosophy tackles philosophical questions by investigating how Natural language, ordinary language is used. Various methods in philosophy give particular importance to intuitions, i.e. non-inferential impressions about the correctness of specific claims or general principles. For example, they play an important role in thought experiments, which employ counterfactual thinking to evaluate the possible consequences of an imagined situation. These anticipated consequences can then be used to confirm or refute philosophical theories. The method of reflective equilibrium also employs intuitions. It seeks to form a Coherentism, coherent position on a certain issue by examining all the relevant beliefs and intuitions, some of which often have to be deemphasized or reformulated in order to arrive at a coherent perspective. Pragmatists stress the significance of concrete practical consequences for assessing whether a philosophical theory is true or false. Experimental philosophy is of rather recent origin. Its methods differ from most other methods of philosophy in that it tries to answer philosophical questions by gathering empirical data in ways similar to social psychology and the cognitive sciences.


Philosophical progress

Many philosophical debates that began in ancient times are still debated today. British philosopher Colin McGinn claims that no philosophical progress has occurred during that interval. Australian philosopher David Chalmers, by contrast, sees progress in philosophy similar to that in science. Meanwhile, Talbot Brewer, professor of philosophy at University of Virginia, argues that "progress" is the wrong standard by which to judge philosophical activity.


Applied and professional philosophy

Some of those who study philosophy become professional philosophers, typically by working as professors who teach, research and write in academic institutions. However, most students of academic philosophy later contribute to law, journalism, religion, sciences, politics, business, or various arts. For example, public figures who have degrees in philosophy include comedians Steve Martin and Ricky Gervais, filmmaker Terrence Malick, Pope John Paul II, Wikipedia co-founder Larry Sanger, technology entrepreneur Peter Thiel, U.S. Supreme Court Justice Stephen Breyer, ''Jeopardy!'' host Alex Trebek, and US vice presidential candidate Carly Fiorina. Curtis White (author), Curtis White has argued that philosophical tools are essential to humanities, sciences and social sciences. Recent efforts to avail the general public to the work and relevance of philosophers include the million-dollar Berggruen Prize for Philosophy, Berggruen Prize, first awarded to Charles Taylor (philosopher), Charles Taylor in 2016. Some philosophers argue that this professionalization has negatively affected the discipline.


Women in philosophy

Although men have generally dominated philosophical discourse, women philosophers have engaged in the discipline throughout history. The list of female philosophers throughout history is vast.Ancient philosophy, Ancient examples include Hipparchia of Maroneia (active ) and Arete of Cyrene (active 5th–4th centuries BCE). Some women philosophers were accepted during the Medieval philosophy, medieval and Modern philosophy, modern eras, but none became part of the Western canon until the Contemporary philosophy, 20th and 21st century, when many suggest that G.E.M. Anscombe, Hannah Arendt, Bell hooks, Bell Hooks, Simone de Beauvoir, Simone Weil and Susanne Langer entered the canon.
In the early 1800s, some colleges and universities in the UK and the US began Mixed-sex education#Higher-education institutions, admitting women, producing more female academics. Nevertheless, U.S. Department of Education reports from the 1990s indicate that few women ended up in philosophy and that philosophy is one of the least gender-proportionate fields in the humanities, with women making up somewhere between 17% and 30% of philosophy faculty according to some studies."Salary, Promotion, and Tenure Status of Minority and Women Faculty in U.S. Colleges and Universities." National Center for Education Statistics, Statistical Analysis Report, March 2000; U.S. Department of Education, Office of Education Research and Improvement, Report # NCES 2000–173; 1993 National Study of Postsecondary Faculty (NSOPF:93). See also "Characteristics and Attitudes of Instructional Faculty and Staff in the Humanities." National Center For Education Statistics, E.D. Tabs, July 1997. U.S. Department of Education, Office of Education Research and Improvement, Report # NCES 97-973;1993 National Study of Postsecondary Faculty (NSOPF-93). Prominent 21st century philosophers include: Judith Butler, Gayatri Chakravorty Spivak, Martha Nussbaum, Onora O'Neill, and Nancy Fraser.


See also

* List of important publications in philosophy * List of years in philosophy * List of philosophy journals * List of philosophy awards * List of unsolved problems in philosophy * Lists of philosophers * Social theory * Systems theory


References


Notes


Citations


Bibliography

* * * * * * * * * * * * * * * *


Further reading


General introduction

* * Blumenau, Ralph. ''Philosophy and Living''. * Edward Craig (philosopher), Craig, Edward. ''Philosophy: A Very Short Introduction''. * Harrison-Barbet, Anthony, ''Mastering Philosophy''. * Bertrand Russell, Russell, Bertrand.
The Problems of Philosophy
'. * Sinclair, Alistair J. ''What is Philosophy? An Introduction'', 2008, * Elliott Sober, Sober, Elliott. (2001). ''Core Questions in Philosophy: A Text with Readings''. Upper Saddle River, Prentice Hall. * Robert C. Solomon, Solomon, Robert C. ''Big Questions: A Short Introduction to Philosophy''. * Nigel Warburton, Warburton, Nigel. ''Philosophy: The Basics''. * Nagel, Thomas. ''What Does It All Mean? A Very Short Introduction to Philosophy''. * ''Classics of Philosophy (Vols. 1, 2, & 3)'' by Louis P. Pojman * Cottingham, John. Western Philosophy: An Anthology. 2nd ed. Malden, MA: Blackwell Pub., 2008. Print. Blackwell Philosophy Anthologies. * Richard Tarnas, Tarnas, Richard. ''The Passion of the Western Mind: Understanding the Ideas That Have Shaped Our World View''.


Topical introductions


African

* Imbo, Samuel Oluoch. ''An Introduction to African Philosophy.''


Eastern

* ''A Source Book in Indian Philosophy'' by Sarvepalli Radhakrishnan, Charles A. Moore * Hamilton, Sue. ''Indian Philosophy: a Very Short Introduction''. * Kupperman, Joel J. ''Classic Asian Philosophy: A Guide to the Essential Texts''. * Lee, Joe and Powell, Jim. ''Eastern Philosophy For Beginners''. * Smart, Ninian. ''World Philosophies''. * Copleston, Frederick. ''Philosophy in Russia: From Herzen to Lenin and Berdyaev''.


Islamic

* ''Medieval Islamic Philosophical Writings'' edited by Muhammad Ali Khalidi * * *


Historical introductions


General

* First published in Russian as . * Kathleen Higgins, Higgins, Kathleen M. and Robert C. Solomon, Solomon, Robert C. ''A Short History of Philosophy''. * Will Durant, Durant, Will, ''Story of Philosophy: The Lives and Opinions of the World's Greatest Philosophers'', Pocket, 1991, * First published in Russian as .


Ancient

* Knight, Kelvin. ''Aristotelian Philosophy: Ethics and Politics from Aristotle to MacIntyre''.


Medieval

* ''The Phenomenology Reader'' by Dermot Moran, Timothy Mooney * Kim, J. and Ernest Sosa, Ed. (1999). ''Metaphysics: An Anthology''. Blackwell Philosophy Anthologies. Oxford, Blackwell Publishers Ltd. *


Modern and contemporary

* ''The English Philosophers from Bacon to Mill'' by Edwin Arthur * ''European Philosophers from Descartes to Nietzsche'' by Monroe Beardsley * ''Existentialism: Basic Writings (Second Edition)'' by Charles Guignon, Derk Pereboom * Curley, Edwin, ''A Spinoza Reader'', Princeton, 1994, * Alan Bullock, Bullock, Alan, R.B. Woodings, and John Cumming, ''eds''. ''The Fontana Dictionary of Modern Thinkers'', in series, ''Fontana Original[s]''. Hammersmith, Eng.: Fontana Press, 1992 [1983]. xxv, 867 p. * Roger Scruton, Scruton, Roger. ''A Short History of Modern Philosophy''. * ''Contemporary Analytic Philosophy: Core Readings'' by James Baillie * Kwame Anthony Appiah, Appiah, Kwame Anthony. ''Thinking it Through  – An Introduction to Contemporary Philosophy'', 2003, * Critchley, Simon. ''Continental Philosophy: A Very Short Introduction''.


Reference works

* * * ''The Cambridge Dictionary of Philosophy'' by Robert Audi * ''The Routledge Encyclopedia of Philosophy'' (10 vols.) edited by Edward Craig, Luciano Floridi (available online by subscription); or * ''The Concise Routledge Encyclopedia of Philosophy'' edited by Edward Craig (an abridgement) * ; in 1996, a ninth supplemental volume appeared that updated the classic 1967 encyclopedia. * ''International Directory of Philosophy and Philosophers''. Charlottesville, Philosophy Documentation Center. * ''Directory of American Philosophers''. Charlottesville, Philosophy Documentation Center. * ''Routledge History of Philosophy'' (10 vols.) edited by John Marenbon * ''History of Philosophy'' (9 vols.) by Frederick Copleston * ''A History of Western Philosophy'' (5 vols.) by W.T. Jones (philosopher), W.T. Jones * ''History of Italian Philosophy'' (2 vols.) by Eugenio Garin. Translated from Italian and Edited by Giorgio Pinton. Introduction by Leon Pompa. * ''Encyclopaedia of Indian Philosophies'' (8 vols.), edited by Karl H. Potter et al. (first 6 volumes out of print) * ''Indian Philosophy'' (2 vols.) by Sarvepalli Radhakrishnan * ''A History of Indian Philosophy'' (5 vols.) by Surendranath Dasgupta * ''History of Chinese Philosophy'' (2 vols.) by Fung Yu-lan, Derk Bodde * ''Instructions for Practical Living and Other Neo-Confucian Writings by Wang Yang-ming'' by Chan, Wing-tsit * ''Encyclopedia of Chinese Philosophy'' edited by Antonio S. Cua * ''Encyclopedia of Eastern Philosophy and Religion'' by Ingrid Fischer-Schreiber, Franz-Karl Ehrhard, Kurt Friedrichs * ''Companion Encyclopedia of Asian Philosophy'' by Brian Carr, Indira Mahalingam * ''A Concise Dictionary of Indian Philosophy: Sanskrit Terms Defined in English'' by John A. Grimes * ''History of Islamic Philosophy'' edited by Seyyed Hossein Nasr, Oliver Leaman * ''History of Jewish Philosophy'' edited by Daniel H. Frank, Oliver Leaman * ''A History of Russian Philosophy: From the Tenth to the Twentieth Centuries'' by Valerii Aleksandrovich Kuvakin * Ayer, A.J. et al., Ed. (1994) ''A Dictionary of Philosophical Quotations''. Blackwell Reference Oxford. Oxford, Basil Blackwell Ltd. * Blackburn, S., Ed. (1996)''The Oxford Dictionary of Philosophy''. Oxford, Oxford University Press. * Mautner, T., Ed. ''The Penguin Dictionary of Philosophy''. London, Penguin Books. * * Angeles, P.A., Ed. (1992). ''The HarperCollins Dictionary of Philosophy''. New York, Harper Perennial. * * Hoffman, Eric, Ed. (1997) ''Guidebook for Publishing Philosophy''. Charlottesville, Philosophy Documentation Center. * Popkin, R.H. (1999). ''The Columbia History of Western Philosophy''. New York, Columbia University Press. * Bullock, Alan, and Oliver Stallybrass, ''jt. eds''. ''The Harper Dictionary of Modern Thought''. New York: Harper & Row, 1977. xix, 684 p. ''N.B''.: "First published in England under the title, ''The Fontana Dictionary of Modern Thought''." * William L. Reese, Reese, W.L. ''Dictionary of Philosophy and Religion: Eastern and Western Thought''. Atlantic Highlands, N.J.: Humanities Press, 1980. iv, 644 p.


External links


''Stanford Encyclopedia of Philosophy''

The ''Internet Encyclopedia of Philosophy''

Indiana Philosophy Ontology Project

PhilPapers
– a comprehensive directory of online philosophical articles and books by academic philosophers *
Philosophy (review)

Philosophy Documentation Center

Popular Philosophy
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