TheInfoList

Aristotle (; grc-gre, Ἀριστοτέλης ''Aristotélēs'', ; 384–322 BC) was a Greek
philosopher A philosopher is someone who practices philosophy Philosophy (from , ) is the study of general and fundamental questions, such as those about Metaphysics, existence, reason, Epistemology, knowledge, Ethics, values, Philosophy of mind, mi ...

and
polymath A polymath ( el, πολυμαθής, , "having learned much"; la, homo universalis, "universal human") is an individual whose knowledge spans a substantial number of subjects, known to draw on complex bodies of knowledge to solve specific prob ...

during the
Classical periodClassical period may refer to: *Classical Greece, specifically of the 5th and 4th centuries BC *Classical antiquity, in the Greco-Roman world *Classical India, an historic period of India (c. 322 BC - c. 550 CE) *Classical period (music), in music ...
in
Ancient Greece Ancient Greece ( el, Ἑλλάς, Hellás) was a civilization belonging to a period of History of Greece, Greek history from the Greek Dark Ages of the 12th–9th centuries BC to the end of Classical Antiquity, antiquity ( AD 600). This era wa ...
. Taught by
Plato Plato ( ; grc-gre, Πλάτων ; 428/427 or 424/423 – 348/347 BC) was an Classical Athens, Athenian philosopher during the Classical Greece, Classical period in Ancient Greece, founder of the Platonist school of thought and the Platoni ...

, he was the founder of the
Lyceum The lyceum is a category of educational institution An educational institution is a place where people of different ages gain an education, including preschools, childcare, primary-elementary schools, secondary-high schools, and universities. ...
, the
Peripatetic school The Peripatetic school was a school of philosophy Philosophy (from , ) is the study of general and fundamental questions, such as those about reason, Metaphysics, existence, Epistemology, knowledge, Ethics, values, Philosophy of mind, m ...
of philosophy, and the
Aristotelian Aristotelian may refer to: * Aristotle (384–322 BCE), Greek philosopher * Aristotelianism, the philosophical tradition begun by Aristotle * Aristotelian ethics * Aristotelian logic, term logic * Aristotelian physics, the natural sciences * Aristot ...
tradition. His writings cover many subjects including
physics Physics is the natural science that studies matter, its Elementary particle, fundamental constituents, its Motion (physics), motion and behavior through Spacetime, space and time, and the related entities of energy and force. "Physical scie ...
,
biology Biology is the natural science that studies life and living organisms, including their anatomy, physical structure, Biochemistry, chemical processes, Molecular biology, molecular interactions, Physiology, physiological mechanisms, Development ...

,
zoology Zoology ()The pronunciation of zoology as is usually regarded as nonstandard, though it is not uncommon. is the branch of biology that studies the Animal, animal kingdom, including the anatomy, structure, embryology, evolution, Biological class ...
,
metaphysics Metaphysics is the branch of philosophy that studies the first principles of being, identity and change, space and time, causality, necessity and possibility. It includes questions about the nature of consciousness and the relationship between ...

,
logic Logic is an interdisciplinary field which studies truth and reasoning. Informal logic seeks to characterize Validity (logic), valid arguments informally, for instance by listing varieties of fallacies. Formal logic represents statements and ar ...

,
ethics Ethics or moral philosophy is a branch of philosophy that "involves systematizing, defending, and recommending concepts of right and wrong action (philosophy), behavior".''Internet Encyclopedia of Philosophy'"Ethics"/ref> The field of ethics, al ...

,
aesthetics Aesthetics, or esthetics (), is a branch of philosophy Philosophy (from , ) is the study of general and fundamental questions, such as those about Metaphysics, existence, reason, Epistemology, knowledge, Ethics, values, Philosophy of m ...

,
poetry Poetry (derived from the Greek#REDIRECT Greek Greek may refer to: Greece Anything of, from, or related to Greece Greece ( el, Ελλάδα, , ), officially the Hellenic Republic, is a country located in Southeast Europe. Its popula ...
,
theatre Theatre or theater is a collaborative form of performing art that uses live performers, usually actor, actors or actresses, to present the experience of a real or imagined event before a live audience in a specific place, often a stage. The p ...

,
music Music is the of arranging s in time through the of melody, harmony, rhythm, and timbre. It is one of the aspects of all human societies. General include common elements such as (which governs and ), (and its associated concepts , , and ...

,
rhetoric Rhetoric () is the art Art is a diverse range of (products of) human activities Humans (''Homo sapiens'') are the most populous and widespread species of primates, characterized by bipedality, opposable thumbs, hairlessness, and ...
,
psychology Psychology is the scientific Science () is a systematic enterprise that builds and organizes knowledge Knowledge is a familiarity or awareness, of someone or something, such as facts A fact is an occurrence in the real world. ...

,
linguistics Linguistics is the scientific study of language A language is a structured system of communication Communication (from Latin Latin (, or , ) is a classical language belonging to the Italic languages, Italic branch of the Indo ...

,
economics Economics () is a 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 interact ...

,
politics Politics (from , ) is the set of activities that are associated with Decision-making, making decisions in Social group, groups, or other forms of Power (social and political), power relations between individuals, such as the distribution of res ...

,
meteorology Meteorology is a branch of the (which include and ), with a major focus on . The study of meteorology dates back , though significant progress in meteorology did not begin until the 18th century. The 19th century saw modest progress in the f ...
,
geology Geology (from the Ancient Greek Ancient Greek includes the forms of the Greek language Greek ( el, label=Modern Greek Modern Greek (, , or , ''Kiní Neoellinikí Glóssa''), generally referred to by speakers simply as Greek ...
and government. Aristotle provided a complex synthesis of the various philosophies existing prior to him. It was above all from his teachings that the West inherited its intellectual
lexicon A lexicon is the of a or branch of (such as or ). In , a lexicon is a language's inventory of s. The word ''lexicon'' derives from word (), neuter of () meaning 'of or for words'. Linguistic theories generally regard human languages as c ...

, as well as problems and methods of inquiry. As a result, his philosophy has exerted a unique influence on almost every form of knowledge in the West and it continues to be a subject of contemporary philosophical discussion. Little is known about his life. Aristotle was born in the city of
Stagira Stagira ( el, Στάγειρα or , also fem. or ) is a Greek Greek may refer to: Greece Anything of, from, or related to Greece Greece ( el, Ελλάδα, , ), officially the Hellenic Republic, is a country located in Southeast Europ ...
in
Northern Greece Northern Greece ( el, Βόρεια Ελλάδα, Voreia Ellada) is used to refer to the northern parts of Greece, and can have various definitions. Administrative term The term "Northern Greece" is widely used to refer mainly to the two northern ...
. His father,
Nicomachus Nicomachus of Gerasa ( grc-gre, Νικόμαχος; c. 60 – c. 120 AD) was an important ancient mathematician best known for his works ''Introduction to Arithmetic'' and ''Manual of Harmonics'' in Ancient Greek, Greek. He was born in Gerasa ...
, died when Aristotle was a child, and he was brought up by a guardian. At seventeen or eighteen years of age he joined
Plato's Academy The Academy (Ancient Greek Ancient Greek includes the forms of the Greek language used in ancient Greece and the classical antiquity, ancient world from around 1500 BC to 300 BC. It is often roughly divided into the following periods: ...

in
Athens , image_skyline = File:Athens Montage L.png, center, 275px, alt=Athens montage. Clicking on an image in the picture causes the browser to load the appropriate article. rect 15 15 985 460 Acropolis of Athens rect 15 475 48 ...

and remained there until the age of thirty-seven (c. 347 BC). Shortly after Plato died, Aristotle left Athens and, at the request of
Philip II of Macedon Philip II of Macedon ( grc-gre, Φίλιππος ; 382 – 21 October 336 BC) was the king (basileus ''Basileus'' ( el, βασιλεύς) is a Greek term and title A title is one or more words used before or after a person's name, in cer ...
, tutored
Alexander the Great Alexander III of Macedon ( grc-gre, Αλέξανδρος}, ; 20/21 July 356 BC – 10/11 June 323 BC), commonly known as Alexander the Great, was a king (''basileus ''Basileus'' ( el, βασιλεύς) is a Greek term and title A title ...

beginning in 343 BC. He established a library in the
Lyceum The lyceum is a category of educational institution An educational institution is a place where people of different ages gain an education, including preschools, childcare, primary-elementary schools, secondary-high schools, and universities. ...
which helped him to produce many of his hundreds of books on
papyrus Papyrus ( ) is a material similar to thick paper that was used in ancient times as a writing surface. It was made from the pith of the papyrus plant, ''Cyperus papyrus'', a wetland sedge. ''Papyrus'' (plural: ''papyri'') can also refer to a do ...

scrolls A scroll (from the Old French ''escroe'' or ''escroue''), also known as a roll, is a roll of papyrus Papyrus ( ) is a material similar to thick that was used in ancient times as a . It was made from the of the papyrus plant, ', a wetl ...
. Though Aristotle wrote many elegant treatises and dialogues for publication, only around a third of his original output has survived, none of it intended for publication. Aristotle's views on
physical science Physical science is a branch of natural science that studies abiotic component, non-living systems, in contrast to life science. It in turn has many branches, each referred to as a "physical science", together called the "physical sciences". D ...
profoundly shaped medieval scholarship. Their influence extended from
Late Antiquity Late antiquity is a periodization Periodization is the process or study of categorizing the past into discrete, quantified named blocks of time.Adam Rabinowitz. It’s about time: historical periodization and Linked Ancient World Data'. Inst ...
and the
Early Middle Ages The Early Middle Ages or Early Medieval Period, sometimes referred to as the Dark Ages, is typically regarded by historians as lasting from the late 5th or early 6th century to the 10th century. They marked the start of the Middle Ages ...
into the
Renaissance The Renaissance ( , ) , from , with the same meanings. is a period Period may refer to: Common uses * Era, a length or span of time * Full stop (or period), a punctuation mark Arts, entertainment, and media * Period (music), a concept in ...

, and were not replaced systematically until
the Enlightenment The Age of Enlightenment (also known as the Age of Reason or simply the Enlightenment); ger, Aufklärung, "Enlightenment"; it, L'Illuminismo, "Enlightenment"; pl, Oświecenie , "Enlightenment"; pt, Iluminismo, "Enlightenment"; es, link=n ...
and theories such as classical mechanics were developed. Some of Aristotle's zoological observations found in his biology, such as on the hectocotyl (reproductive) arm of the
octopus An octopus (pl. octopuses/octopi, see below for variants) is a soft-bodied, eight- limbed mollusc Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda. The members are known as molluscs or mollusks (). A ...

, were disbelieved until the 19th century. His works contain the earliest known formal study of logic, studied by medieval scholars such as
Peter Abelard Peter Abelard (; french: link=no, Pierre Abélard; la, Petrus Abaelardus or ''Abailardus''; 21 April 1142) was a medieval In the history of Europe The history of Europe concerns itself with the discovery and collection, the study, or ...

and
John Buridan Jean Buridan (; Latin Latin (, or , ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken in the area around Rome, known as Latium. Through the power of the Roman ...
. Aristotle's influence on logic also continued well into the 19th century. He influenced
Judeo-Islamic philosophies (800–1400) This article covers the influence of Jewish Jews ( he, יְהוּדִים ISO 259-2 , Israeli pronunciation ) or Jewish people are members of an ethnoreligious group and a nation originating from the Israelites Israelite origins and kingdom ...
during the
Middle Ages In the history of Europe The history of Europe concerns itself with the discovery and collection, the study, organization and presentation and the interpretation of past events and affairs of the people of Europe since the beginning of ...
, as well as
Christian theology #REDIRECT Christian theology #REDIRECT Christian theology Christian theology is the theology of Christianity, Christian belief and practice. * help them better understand Christian tenets * make comparative religion, comparisons between Christia ...
, especially the
Neoplatonism Neoplatonism is a strand of Platonic philosophy Philosophy (from , ) is the study of general and fundamental questions, such as those about reason, Metaphysics, existence, Epistemology, knowledge, Ethics, values, Philosophy of mind, m ...
of the
Early Church The history of Christianity concerns the Christianity, Christian religion, Christendom, Christian countries, and the Christians with their various Christian denomination, denominations, from the Christianity in the 1st century, 1st century to ...

and the scholastic tradition of the
Catholic Church The Catholic Church, also known as the Roman Catholic Church, is the largest Christian church, with 1.3 billion baptised Baptism (from the Greek language, Greek noun βάπτισμα ''báptisma'') is a Christians, Christian ...

. Aristotle was revered among medieval Muslim scholars as "The First Teacher" and among medieval Christians like
Thomas Aquinas Thomas Aquinas (; it, Tommaso d'Aquino, lit=Thomas of Aquino, Italy, Aquino; 1225 – 7 March 1274) was an Italian Dominican Order, Dominican friar, Philosophy, philosopher, Catholic priest, and Doctor of the Church. An immensely influential ...

as simply "The Philosopher". His ethics, though always influential, gained renewed interest with the modern advent of
virtue ethics Virtue ethics (also aretaic ethics, from Greek#REDIRECT Greek Greek may refer to: Greece Anything of, from, or related to Greece Greece ( el, Ελλάδα, , ), officially the Hellenic Republic, is a country located in Southeast Europe. ...
.

# Life

In general, the details of Aristotle's life are not well-established. The biographies written in ancient times are often speculative and historians only agree on a few salient points. Aristotle, whose name means "the best purpose" in Ancient Greek, was born in 384 BC in
Stagira Stagira ( el, Στάγειρα or , also fem. or ) is a Greek Greek may refer to: Greece Anything of, from, or related to Greece Greece ( el, Ελλάδα, , ), officially the Hellenic Republic, is a country located in Southeast Europ ...
,
Chalcidice Chalkidiki (; el, Χαλκιδική, Halkidhikí, ) also spelled ''Chalkidike'', ''Chalcidice'', ''Khalkidhiki'', or ''Halkidiki'', is a peninsula A peninsula ( la, paeninsula from ' "almost" and ' "island") is a landform surrounded by water ...

, about 55 km (34 miles) east of modern-day
Thessaloniki Thessaloniki (; el, Θεσσαλονίκη, ), also known as Thessalonica (), Saloniki or Salonica () is the second-largest city in Greece Greece ( el, Ελλάδα, Elláda, ), officially the Hellenic Republic, is a country located in So ...

. His father
Nicomachus Nicomachus of Gerasa ( grc-gre, Νικόμαχος; c. 60 – c. 120 AD) was an important ancient mathematician best known for his works ''Introduction to Arithmetic'' and ''Manual of Harmonics'' in Ancient Greek, Greek. He was born in Gerasa ...
was the personal physician to King Amyntas of Macedon. While he was young, Aristotle learned about biology and medical information, which was taught by his father. Both of Aristotle's parents died when he was about thirteen, and
Proxenus of AtarneusProxenus of Atarneus ( el, Πρόξενος ὁ Ἀταρνεύς) is most famous for being Aristotle Aristotle (; grc-gre, Ἀριστοτέλης ''Aristotélēs'', ; 384–322 BC) was a Greek philosopher and polymath during the Classi ...
became his guardian. Although little information about Aristotle's childhood has survived, he probably spent some time within the Macedonian palace, making his first connections with the Macedonian monarchy. At the age of seventeen or eighteen, Aristotle moved to Athens to continue his education at
Plato's Academy The Academy (Ancient Greek Ancient Greek includes the forms of the Greek language Greek ( el, label=Modern Greek Modern Greek (, , or , ''Kiní Neoellinikí Glóssa''), generally referred to by speakers simply as Greek (, ) ...
. He probably experienced the
Eleusinian Mysteries The Eleusinian Mysteries ( el, Ἐλευσίνια Μυστήρια, Eleusínia Mystḗria) were initiations held every year for the Cult (religious practice), cult of Demeter and Persephone based at the Panhellenic Sanctuary of Eleusis in ancien ...
as he wrote when describing the sights one viewed at the Eleusinian Mysteries, "to experience is to learn" αθείν μαθεĩν Aristotle remained in Athens for nearly twenty years before leaving in 348/47 BC. The traditional story about his departure records that he was disappointed with the Academy's direction after control passed to Plato's nephew
Speusippus Speusippus (; el, Σπεύσιππος; c. 408 – 339/8 BC) was an ancient Greek Ancient Greek includes the forms of the Greek language Greek ( el, label=Modern Greek Modern Greek (, , or , ''Kiní Neoellinikí Glóssa''), ge ...
, although it is possible that he feared the anti-Macedonian sentiments in Athens at that time and left before Plato died. Aristotle then accompanied
Xenocrates Xenocrates (; el, Ξενοκράτης; c. 396/5314/3 BC) of Chalcedon was a Greek philosopher, mathematician A mathematician is someone who uses an extensive knowledge of mathematics Mathematics (from Ancient Greek, Greek: ) includes t ...

to the court of his friend Hermias of Atarneus in
Asia Minor Anatolia,, tr, Anadolu Yarımadası), and the Anatolian plateau. also known as Asia Minor, is a large peninsula A peninsula ( la, paeninsula from 'almost' and 'island') is a landform A landform is a natural or artificial feature of ...

. After the death of Hermias, Aristotle travelled with his pupil
Theophrastus Theophrastus (; grc-gre, Θεόφραστος ; c. 371c. 287 BC), a Greek native of Eresos in Lesbos Island, Lesbos,Gavin Hardy and Laurence Totelin, ''Ancient Botany'', Routledge, 2015, p. 8. was the successor to Aristotle in the Peripatetic ...

to the island of
Lesbos Lesbos or Lesvos (, also ; el, Λέσβος, Lésvos ) is a Greek island located in the northeastern Aegean Sea The Aegean Sea ; tr, Ege Denizi is an elongated embayment A bay is a recessed, coastal body of water that directly con ...
, where together they researched the
botany Botany, also called , plant biology or phytology, is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises in this field. The term "botany" comes from the Ancient Greek wo ...

and zoology of the island and its sheltered lagoon. While in Lesbos, Aristotle married
Pythias Pythias (; el, Πυθιάς, translit=Pūthiás), also known as Pythias the Elder, was a Greek biologist and embryologist. She was the adoptive daughter of Hermias of Atarneus, as well as Aristotle's first wife. Personal life and family Whilst ...
, either Hermias's adoptive daughter or niece. She bore him a daughter, whom they also named Pythias. In 343 BC, Aristotle was invited by
Philip II of Macedon Philip II of Macedon ( grc-gre, Φίλιππος ; 382 – 21 October 336 BC) was the king (basileus ''Basileus'' ( el, βασιλεύς) is a Greek term and title A title is one or more words used before or after a person's name, in cer ...
to become the tutor to his son
Alexander Alexander is a male given name. The most prominent bearer of the name is Alexander the Great, the king of the Ancient Greek kingdom of Macedonia (ancient kingdom), Macedonia who created one of the largest empires in ancient history. Etymology T ...

. Aristotle was appointed as the head of the royal academy of
Macedon Macedonia (; grc-gre, Μακεδονία), also called Macedon (), was an Classical antiquity, ancient monarchy, kingdom on the periphery of Archaic Greece, Archaic and Classical Greece, and later the dominant state of Hellenistic Greece. Th ...

. During Aristotle's time in the Macedonian court, he gave lessons not only to Alexander but also to two other future kings:
Ptolemy Claudius Ptolemy (; grc-koi, Κλαύδιος Πτολεμαῖος, , ; la, Claudius Ptolemaeus; AD) was a mathematician A mathematician is someone who uses an extensive knowledge of mathematics Mathematics (from Greek: ) includes ...
and
Cassander Cassander ( Greek: Κάσσανδρος Ἀντιπάτρου, ''Kassandros Antipatrou''; "son of Antipatros": c. 355 BC – 297 BC) was king of the ancient kingdom of Macedon Macedonia (; grc, Μακεδονία), also called Macedon ( ...

. Aristotle encouraged Alexander toward eastern conquest, and Aristotle's own attitude towards
Persia Iran ( fa, ایران ), also called Persia, and officially the Islamic Republic of Iran, is a country in Western Asia. It is bordered to the northwest by Armenia and Azerbaijan, to the north by the Caspian Sea, to the northeast by Tu ...

was unabashedly
ethnocentric Ethnocentrism in social science Social science is the branch A branch ( or , ) or tree branch (sometimes referred to in botany Botany, also called , plant biology or phytology, is the science of plant life and a branch of b ...
. In one famous example, he counsels Alexander to be "a leader to the Greeks and a despot to the barbarians, to look after the former as after friends and relatives, and to deal with the latter as with beasts or plants". By 335 BC, Aristotle had returned to Athens, establishing his own school there known as the
Lyceum The lyceum is a category of educational institution An educational institution is a place where people of different ages gain an education, including preschools, childcare, primary-elementary schools, secondary-high schools, and universities. ...
. Aristotle conducted courses at the school for the next twelve years. While in Athens, his wife Pythias died and Aristotle became involved with
HerpyllisHerpyllis of Stagira ( el, Ἑρπυλλίς) was Aristotle's concubine after his wife, Pythias, died. Together Aristotle and Herpyllis had a son, named Nicomachus (son of Aristotle), Nicomachus after Aristotle's father. Nicomachus was quite young ...
of Stagira, who bore him a son whom he named after his father,
Nicomachus Nicomachus of Gerasa ( grc-gre, Νικόμαχος; c. 60 – c. 120 AD) was an important ancient mathematician best known for his works ''Introduction to Arithmetic'' and ''Manual of Harmonics'' in Ancient Greek, Greek. He was born in Gerasa ...
. If the ''
Suda The ''Suda'' or ''Souda'' (; grc-x-medieval, Σοῦδα, Soûda; la, Suidae Lexicon) is a large 10th-century Byzantine The Byzantine Empire, also referred to as the Eastern Roman Empire, or Byzantium, was the continuation of the Roman ...

'' an uncritical compilation from the Middle Ages is accurate, he may also have had an '' erômenos'', Palaephatus of Abydus. This period in Athens, between 335 and 323 BC, is when Aristotle is believed to have composed many of his works. He wrote many dialogues, of which only fragments have survived. Those works that have survived are in
treatise A treatise is a formal Formal, formality, informal or informality imply the complying with, or not complying with, some set theory, set of requirements (substantial form, forms, in Ancient Greek). They may refer to: Dress code and events * For ...
form and were not, for the most part, intended for widespread publication; they are generally thought to be lecture aids for his students. His most important treatises include ''
Physics Physics is the natural science that studies matter, its Elementary particle, fundamental constituents, its Motion (physics), motion and behavior through Spacetime, space and time, and the related entities of energy and force. "Physical scie ...
'', ''
Metaphysics Metaphysics is the branch of philosophy that studies the first principles of being, identity and change, space and time, causality, necessity and possibility. It includes questions about the nature of consciousness and the relationship between ...
'', ''
Nicomachean Ethics The ''Nicomachean Ethics'' (; grc, Ἠθικὰ Νικομάχεια, ) is the name normally given to 's best-known work on . The work, which plays a role in defining , consists of ten books, originally separate scrolls, and is understood to be ...
'', ''
Politics Politics (from , ) is the set of activities that are associated with Decision-making, making decisions in Social group, groups, or other forms of Power (social and political), power relations between individuals, such as the distribution of res ...
'', ''
On the Soul ''On the Soul'' (Greek#REDIRECT Greek Greek may refer to: Greece Anything of, from, or related to Greece Greece ( el, Ελλάδα, , ), officially the Hellenic Republic, is a country located in Southeast Europe. Its population is approxi ...
'' and ''
Poetics Poetics is the theory of literary forms and literary discourse Discourse is a generalization of the notion of a conversation Conversation is interactive communication Communication (from Latin ''communicare'', meaning "to share") is th ...
''. Aristotle studied and made significant contributions to "logic, metaphysics, mathematics, physics, biology, botany, ethics, politics, agriculture, medicine, dance, and theatre." Near the end of his life, Alexander and Aristotle became estranged over Alexander's relationship with Persia and Persians. A widespread tradition in antiquity suspected Aristotle of playing a role in Alexander's death, but the only evidence of this is an unlikely claim made some six years after the death. Following Alexander's death, anti-Macedonian sentiment in Athens was rekindled. In 322 BC, Demophilus and Eurymedon the Hierophant reportedly denounced Aristotle for impiety, prompting him to flee to his mother's family estate in , at which occasion he was said to have stated: "I will not allow the Athenians to sin twice against philosophy" – a reference to Athens's trial and execution of Socrates. He died on Euboea of natural causes later that same year, having named his student
Antipater Antipater (; grc, Ἀντίπατρος, translit=Antipatros, lit=like the father; c. 400 BC319 BC) was a Macedonian general and statesman under kings Philip II of Macedon and Alexander the Great, and father of King Cassander. In 320  ...
as his chief
executor An executor is someone who is responsible for executing, or following through on, an assigned task or duty. The feminine form, executrix, may sometimes be used. Overview An executor is a legal term referring to a person named by the maker of a ...
and leaving a
will Will may refer to: Common meanings * Will and testament A will or testament is a legal document that expresses a person's (testator A testator () is a person A person (plural people or persons) is a being that has certain capacities or at ...
in which he asked to be buried next to his wife.

# Speculative philosophy

## Logic

With the ''
Prior Analytics The ''Prior Analytics'' ( grc-gre, Ἀναλυτικὰ Πρότερα; la, Analytica Priora) is a work by Aristotle Aristotle (; grc-gre, Ἀριστοτέλης ''Aristotélēs'', ; 384–322 BC) was a Greek philosopher A p ...
'', Aristotle is credited with the earliest study of formal logic, and his conception of it was the dominant form of Western logic until 19th-century advances in
mathematical logic Mathematical logic is the study of 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 formal sys ...
.
Kant Immanuel Kant (, , ; 22 April 1724 – 12 February 1804) was a German philosopher A philosopher is someone who practices philosophy Philosophy (from , ) is the study of general and fundamental questions, such as those about r ...

stated in the ''
Critique of Pure Reason ''Critique of Pure Reason'' (german: Kritik der reinen Vernunft; 1781; second edition 1787) is a book by the German philosopher Immanuel Kant Immanuel Kant (, , ; 22 April 1724 – 12 February 1804) was a German philosopher A philos ...
'' that with Aristotle logic reached its completion.

### ''Organon''

What is today called ''Aristotelian logic'' with its (methods of logical argument), Aristotle himself would have labelled "analytics". The term "logic" he reserved to mean ''dialectics''. Most of Aristotle's work is probably not in its original form, because it was most likely edited by students and later lecturers. The logical works of Aristotle were compiled into a set of six books called the ''
Organon The ''Organon'' ( grc, Ὄργανον, meaning "instrument, tool, organ") is the standard collection of Aristotle Aristotle (; grc-gre, Ἀριστοτέλης ''Aristotélēs'', ; 384–322 BC) was a Greek philosopher A philos ...

'' around 40 BC by
Andronicus of RhodesAndronicus of Rhodes ( grc, Ἀνδρόνικος ὁ Ῥόδιος, translit=Andrónikos ho Rhódios; la, Andronicus Rhodius; ) was a Greek philosopher from Rhodes Rhodes (; el, Ρόδος, translit=Ródos ) is the largest of the Dodecanese ...
or others among his followers. The books are: # ''
Categories Category, plural categories, may refer to: Philosophy and general uses *Categorization Categorization is the human ability and activity of recognizing shared features or similarities between the elements of the experience of the world (such ...
'' # ''
On Interpretation ''De Interpretatione'' or ''On Interpretation'' (Ancient Greek, Greek: Περὶ Ἑρμηνείας, ''Peri Hermeneias'') is the second text from Aristotle's ''Organon'' and is among the earliest surviving philosophical works in the Western phil ...
'' # ''
Prior Analytics The ''Prior Analytics'' ( grc-gre, Ἀναλυτικὰ Πρότερα; la, Analytica Priora) is a work by Aristotle Aristotle (; grc-gre, Ἀριστοτέλης ''Aristotélēs'', ; 384–322 BC) was a Greek philosopher A p ...
'' # ''
Posterior Analytics The ''Posterior Analytics'' ( grc-gre, Ἀναλυτικὰ Ὕστερα; la, Analytica Posteriora) is a text from Aristotle Aristotle (; grc-gre, Ἀριστοτέλης ''Aristotélēs'', ; 384–322 BC) was a Greek philosopher an ...
'' # '' Topics'' # ''
On Sophistical Refutations ''On Sophistical Refutations'' ( el, Σοφιστικοὶ Ἔλεγχοι; la, De Sophisticis Elenchis) is a text in Aristotle Aristotle (; grc-gre, Ἀριστοτέλης ''Aristotélēs'', ; 384–322 BC) was a Greek philosopher ...
'' The order of the books (or the teachings from which they are composed) is not certain, but this list was derived from analysis of Aristotle's writings. It goes from the basics, the analysis of simple terms in the ''Categories,'' the analysis of propositions and their elementary relations in ''On Interpretation'', to the study of more complex forms, namely, syllogisms (in the ''Analytics'') and dialectics (in the ''Topics'' and ''Sophistical Refutations''). The first three treatises form the core of the logical theory ''stricto sensu'': the grammar of the language of logic and the correct rules of reasoning. The ''Rhetoric'' is not conventionally included, but it states that it relies on the ''Topics''.

## Metaphysics

The word "metaphysics" appears to have been coined by the first century AD editor who assembled various small selections of Aristotle's works to the treatise we know by the name ''Metaphysics''. Aristotle called it "first philosophy", and distinguished it from mathematics and natural science (physics) as the contemplative (''theoretikē'') philosophy which is "theological" and studies the divine. He wrote in his ''Metaphysics'' (1026a16):

### Substance

Aristotle examines the concepts of
substance Substance may refer to: * Substance (Jainism), a term in Jain ontology to denote the base or owner of attributes * Chemical substance, a material with a definite chemical composition * Matter, anything that has mass and takes up space * Substance th ...
(''ousia'') and
essence Essence ( la, essentia) is a polysemic Polysemy ( or ; from grc-gre, πολύ-, , "many" and , , "sign") is the capacity for a word or phrase to have multiple meanings, usually related by contiguity of meaning within a semantic field. Polyse ...
(''to ti ên einai'', "the what it was to be") in his ''Metaphysics'' (Book VII), and he concludes that a particular substance is a combination of both matter and form, a philosophical theory called
hylomorphism Hylomorphism (or hylemorphism) is a philosophical Philosophy (from , ) is the study of general and fundamental questions, such as those about existence Existence is the ability of an entity to interact with physical or mental reality Re ...
. In Book VIII, he distinguishes the matter of the substance as the
substratum In linguistics Linguistics is the scientific study of language, meaning that it is a comprehensive, systematic, objective, and precise study of language. Linguistics encompasses the analysis of every aspect of language, as well as the m ...
, or the stuff of which it is composed. For example, the matter of a house is the bricks, stones, timbers, etc., or whatever constitutes the ''potential'' house, while the form of the substance is the ''actual'' house, namely 'covering for bodies and chattels' or any other Genus-differentia definition, differentia that let us define something as a house. The formula that gives the components is the account of the matter, and the formula that gives the differentia is the account of the form.

### = Immanent realism

= Like his teacher Plato, Aristotle's philosophy aims at the Problem of universals, universal. Aristotle's ontology places the universal (''katholou'') in particulars (''kath' hekaston''), things in the world, whereas for Plato the universal is a separately existing form which actual things imitate. For Aristotle, "form" is still what phenomena are based on, but is "instantiated" in a particular substance. Plato argued that all things have a Theory of forms, universal form, which could be either a property or a relation to other things. When one looks at an apple, for example, one sees an apple, and one can also analyse a form of an apple. In this distinction, there is a particular apple and a universal form of an apple. Moreover, one can place an apple next to a book, so that one can speak of both the book and apple as being next to each other. Plato argued that there are some universal forms that are not a part of particular things. For example, it is possible that there is no particular good in existence, but "good" is still a proper universal form. Aristotle disagreed with Plato on this point, arguing that all universals are instantiated at some period of time, and that there are no universals that are unattached to existing things. In addition, Aristotle disagreed with Plato about the location of universals. Where Plato spoke of the world of forms, a place where all universal forms subsist, Aristotle maintained that universals exist within each thing on which each universal is predicated. So, according to Aristotle, the form of apple exists within each apple, rather than in the world of the forms.

### = Potentiality and actuality

= With regard to the change (''Potentiality and actuality, kinesis'') and its causes now, as he defines in his ''
Physics Physics is the natural science that studies matter, its Elementary particle, fundamental constituents, its Motion (physics), motion and behavior through Spacetime, space and time, and the related entities of energy and force. "Physical scie ...
'' and ''On Generation and Corruption'' 319b–320a, he distinguishes the coming to be from: # growth and diminution, which is change in quantity; # locomotion, which is change in space; and # alteration, which is change in quality. The coming to be is a change where nothing persists of which the resultant is a property. In that particular change he introduces the concept of potentiality (''Dunamis, dynamis'') and actuality (''entelecheia'') in association with the matter and the form. Referring to potentiality, this is what a thing is capable of doing or being acted upon if the conditions are right and it is not prevented by something else. For example, the seed of a plant in the soil is potentially (''dynamei'') a plant, and if it is not prevented by something, it will become a plant. Potentially beings can either 'act' (''poiein'') or 'be acted upon' (''paschein''), which can be either innate or learned. For example, the eyes possess the potentiality of sight (innate – being acted upon), while the capability of playing the flute can be possessed by learning (exercise – acting). Actuality is the fulfilment of the end of the potentiality. Because the end (''telos'') is the principle of every change, and for the sake of the end exists potentiality, therefore actuality is the end. Referring then to the previous example, it can be said that an actuality is when a plant does one of the activities that plants do. In summary, the matter used to make a house has potentiality to be a house and both the activity of building and the form of the final house are actualities, which is also a final cause or end. Then Aristotle proceeds and concludes that the actuality is prior to potentiality in formula, in time and in substantiality. With this definition of the particular substance (i.e., matter and form), Aristotle tries to solve the problem of the unity of the beings, for example, "what is it that makes a man one"? Since, according to
Plato Plato ( ; grc-gre, Πλάτων ; 428/427 or 424/423 – 348/347 BC) was an Classical Athens, Athenian philosopher during the Classical Greece, Classical period in Ancient Greece, founder of the Platonist school of thought and the Platoni ...

there are two Ideas: animal and biped, how then is man a unity? However, according to Aristotle, the potential being (matter) and the actual one (form) are one and the same.

## Epistemology

Aristotle's immanent realism means his epistemology is based on the study of things that exist or happen in the world, and rises to knowledge of the universal, whereas for Plato epistemology begins with knowledge of universal Theory of Forms, Forms (or ideas) and descends to knowledge of particular imitations of these. Aristotle uses Inductive reasoning, induction from examples alongside Deductive reasoning, deduction, whereas Plato relies on deduction from ''A priori and a posteriori, a priori'' principles.

# Natural philosophy

Aristotle's "natural philosophy" spans a wide range of natural phenomena including those now covered by physics, biology and other natural sciences. In Aristotle's terminology, "natural philosophy" is a branch of philosophy examining the phenomena of the natural world, and includes fields that would be regarded today as physics, biology and other natural sciences. Aristotle's work encompassed virtually all facets of intellectual inquiry. Aristotle makes philosophy in the broad sense coextensive with reasoning, which he also would describe as "science". However, his use of the term ''science'' carries a different meaning than that covered by the term "scientific method". For Aristotle, "all science (''dianoia'') is either practical, poetical or theoretical" (''Metaphysics'' 1025b25). His practical science includes ethics and politics; his poetical science means the study of fine arts including poetry; his theoretical science covers physics, mathematics and metaphysics.

## Physics

### Five elements

In his ''On Generation and Corruption'', Aristotle related each of the four elements proposed earlier by Empedocles, Earth (classical element), Earth, Water (classical element), Water, Air (classical element), Air, and Fire (classical element), Fire, to two of the four sensible qualities, hot, cold, wet, and dry. In the Empedoclean scheme, all matter was made of the four elements, in differing proportions. Aristotle's scheme added the heavenly Aether (classical element), Aether, the divine substance of the Celestial spheres, heavenly spheres, stars and planets.

### Motion

Aristotle describes two kinds of motion: "violent" or "unnatural motion", such as that of a thrown stone, in the ''Physics'' (254b10), and "natural motion", such as of a falling object, in ''On the Heavens'' (300a20). In violent motion, as soon as the agent stops causing it, the motion stops also: in other words, the natural state of an object is to be at rest, since Aristotle does not address friction. With this understanding, it can be observed that, as Aristotle stated, heavy objects (on the ground, say) require more force to make them move; and objects pushed with greater force move faster. This would imply the equation :: $F=mv$, incorrect in modern physics. Natural motion depends on the element concerned: the aether naturally moves in a circle around the heavens, while the 4 Empedoclean elements move vertically up (like fire, as is observed) or down (like earth) towards their natural resting places. In the ''Physics'' (215a25), Aristotle effectively states a quantitative law, that the speed, v, of a falling body is proportional (say, with constant c) to its weight, W, and inversely proportional to the density, ρ, of the fluid in which it is falling: :: $v=c\frac$ Aristotle implies that in a vacuum the speed of fall would become infinite, and concludes from this apparent absurdity that a vacuum is not possible. Opinions have varied on whether Aristotle intended to state quantitative laws. Henri Carteron held the "extreme view" that Aristotle's concept of force was basically qualitative, but other authors reject this. Archimedes corrected Aristotle's theory that bodies move towards their natural resting places; metal boats can float if they Archimedes' principle, displace enough water; floating depends in Archimedes' scheme on the mass and volume of the object, not as Aristotle thought its elementary composition. Aristotle's writings on motion remained influential until the Early Modern period. John Philoponus (in the
Middle Ages In the history of Europe The history of Europe concerns itself with the discovery and collection, the study, organization and presentation and the interpretation of past events and affairs of the people of Europe since the beginning of ...
) and Galileo Galilei, Galileo are said to have shown by experiment that Aristotle's claim that a heavier object falls faster than a lighter object is incorrect. A contrary opinion is given by Carlo Rovelli, who argues that Aristotle's physics of motion is correct within its domain of validity, that of objects in the Earth's gravitational field immersed in a fluid such as air. In this system, heavy bodies in steady fall indeed travel faster than light ones (whether friction is ignored, or not), and they do fall more slowly in a denser medium. Newton's "forced" motion corresponds to Aristotle's "violent" motion with its external agent, but Aristotle's assumption that the agent's effect stops immediately it stops acting (e.g., the ball leaves the thrower's hand) has awkward consequences: he has to suppose that surrounding fluid helps to push the ball along to make it continue to rise even though the hand is no longer acting on it, resulting in the Medieval theory of impetus.

### Four causes

Aristotle suggested that the reason for anything coming about can be attributed to four different types of simultaneously active factors. His term ''aitia'' is traditionally translated as "cause", but it does not always refer to temporal sequence; it might be better translated as "explanation", but the traditional rendering will be employed here. * Material cause describes the material out of which something is composed. Thus the material cause of a table is wood. It is not about action. It does not mean that one domino knocks over another domino. * The formal cause is its form, i.e., the arrangement of that matter. It tells one what a thing is, that a thing is determined by the definition, form, pattern, essence, whole, synthesis or archetype. It embraces the account of causes in terms of fundamental principles or general laws, as the whole (i.e., macrostructure) is the cause of its parts, a relationship known as the whole-part causation. Plainly put, the formal cause is the idea in the mind of the sculptor that brings the sculpture into being. A simple example of the formal cause is the mental image or idea that allows an artist, architect, or engineer to create a drawing. * The efficient cause is "the primary source", or that from which the change under consideration proceeds. It identifies 'what makes of what is made and what causes change of what is changed' and so suggests all sorts of agents, non-living or living, acting as the sources of change or movement or rest. Representing the current understanding of causality as the relation of cause and effect, this covers the modern definitions of "cause" as either the agent or agency or particular events or states of affairs. In the case of two dominoes, when the first is knocked over it causes the second also to fall over. In the case of animals, this agency is a combination of developmental biology, how it develops from the egg, and physiology, how its body functions. * The final cause (''telos'') is its purpose, the reason why a thing exists or is done, including both purposeful and instrumental actions and activities. The final cause is the purpose or function that something is supposed to serve. This covers modern ideas of motivating causes, such as volition. In the case of living things, it implies adaptation to a particular way of life.

### Optics

Aristotle describes experiments in optics using a camera obscura in ''Problems (Aristotle), Problems'', book 15. The apparatus consisted of a dark chamber with a small aperture that let light in. With it, he saw that whatever shape he made the hole, the sun's image always remained circular. He also noted that increasing the distance between the aperture and the image surface magnified the image.

### Chance and spontaneity

According to Aristotle, spontaneity and chance are causes of some things, distinguishable from other types of cause such as simple necessity. Chance as an incidental cause lies in the realm of Accident (philosophy), accidental things, "from what is spontaneous". There is also more a specific kind of chance, which Aristotle names "luck", that only applies to people's moral choices.

## Astronomy

In astronomy, Aristotle refuted Democritus's claim that the Milky Way was made up of "those stars which are shaded by the earth from the sun's rays," pointing out correctly that if "the size of the sun is greater than that of the earth and the distance of the stars from the earth many times greater than that of the sun, then... the sun shines on all the stars and the earth screens none of them."

## Geology/Natural Sciences

Aristotle was one of the first people to record any geology, geological observations. He stated that Uniformitarianism, geological change was too slow to be observed in one person's lifetime. The geologist Charles Lyell noted that Aristotle described such change, including "lakes that had dried up" and "deserts that had become watered by rivers", giving as examples the growth of the Nile delta since the time of Homer, and "the upheaving of one of the Aeolian islands, previous to a volcanic eruption."' Aristotle also made many observations about the hydrologic cycle and meteorology (including his major writings "Meteorologica"). For example, he made some of the earliest observations about desalination: he observed early – and correctly – that when seawater is heated, freshwater evaporates and that the oceans are then replenished by the cycle of rainfall and river runoff (“I have proved by experiment that salt water evaporated forms fresh and the vapor does not when it condenses condense into sea water again”

## Biology

### Empirical research

Aristotle was the first person to study biology systematically, and biology forms a large part of his writings. He spent two years observing and describing the zoology of
Lesbos Lesbos or Lesvos (, also ; el, Λέσβος, Lésvos ) is a Greek island located in the northeastern Aegean Sea The Aegean Sea ; tr, Ege Denizi is an elongated embayment A bay is a recessed, coastal body of water that directly con ...
and the surrounding seas, including in particular the Pyrrha lagoon in the centre of Lesbos. His data in ''History of Animals'', ''Generation of Animals'', ''Movement of Animals'', and ''Parts of Animals'' are assembled from his own observations, statements given by people with specialized knowledge such as beekeepers and fishermen, and less accurate accounts provided by travellers from overseas. His apparent emphasis on animals rather than plants is a historical accident: his works on
botany Botany, also called , plant biology or phytology, is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises in this field. The term "botany" comes from the Ancient Greek wo ...

have been lost, but two books on plants by his pupil Theophrastus have survived. Aristotle reports on the sea-life visible from observation on Lesbos and the catches of fishermen. He describes the catfish, electric ray, and frogfish in detail, as well as cephalopods such as the
octopus An octopus (pl. octopuses/octopi, see below for variants) is a soft-bodied, eight- limbed mollusc Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda. The members are known as molluscs or mollusks (). A ...

and paper nautilus. His description of the hectocotylus, hectocotyl arm of cephalopods, used in sexual reproduction, was widely disbelieved until the 19th century. He gives accurate descriptions of the four-chambered fore-stomachs of ruminants, and of the Ovoviviparity, ovoviviparous embryological development of the hound shark. He notes that an animal's structure is well matched to function, so, among birds, the heron, which lives in marshes with soft mud and lives by catching fish, has a long neck and long legs, and a sharp spear-like beak, whereas ducks that swim have short legs and webbed feet. Charles Darwin, Darwin, too, noted these sorts of differences between similar kinds of animal, but unlike Aristotle used the data to come to the theory of evolution. Aristotle's writings can seem to modern readers close to implying evolution, but while Aristotle was aware that new mutations or Hybridisation (biology), hybridizations could occur, he saw these as rare accidents. For Aristotle, accidents, like heat waves in winter, must be considered distinct from natural causes. He was thus critical of Empedocles's materialist theory of a "survival of the fittest" origin of living things and their organs, and ridiculed the idea that accidents could lead to orderly results. To put his views into modern terms, he nowhere says that different species can have a common descent, common ancestor, or that one kind can speciation, change into another, or that kinds can become extinction, extinct.

### Scientific style

Aristotle did not do experiments in the modern sense. He used the ancient Greek term ''pepeiramenoi'' to mean observations, or at most investigative procedures like dissection. In ''Generation of Animals'', he finds a fertilized hen's egg of a suitable stage and opens it to see the embryo's heart beating inside. Instead, he practiced a different style of science: systematically gathering data, discovering patterns common to whole groups of animals, and inferring possible causal explanations from these. This style is common in modern biology when large amounts of data become available in a new field, such as genomics. It does not result in the same certainty as experimental science, but it sets out testable hypotheses and constructs a narrative explanation of what is observed. In this sense, Aristotle's biology is scientific. From the data he collected and documented, Aristotle inferred quite a number of biological rules, rules relating the life-history features of the live-bearing tetrapods (terrestrial placental mammals) that he studied. Among these correct predictions are the following. Brood size decreases with (adult) body mass, so that an elephant has fewer young (usually just one) per brood than a mouse. Life expectancy, Lifespan increases with gestation period, and also with body mass, so that elephants live longer than mice, have a longer period of gestation, and are heavier. As a final example, fecundity decreases with lifespan, so long-lived kinds like elephants have fewer young in total than short-lived kinds like mice.

### Classification of living things

Aristotle distinguished about 500 species of animals, arranging these in the ''History of Animals'' in a graded scale of perfection, a ''scala naturae'', with man at the top. His system had eleven grades of animal, from highest potential to lowest, expressed in their form at birth: the highest gave viviparity, live birth to hot and wet creatures, the lowest laid cold, dry mineral-like eggs. Animals came above plants, and these in turn were above minerals. see also: He grouped what the modern zoologist would call vertebrates as the hotter "animals with blood", and below them the colder invertebrates as "animals without blood". Those with blood were divided into the live-bearing (mammals), and the egg-laying (birds, reptiles, fish). Those without blood were insects, crustacea (non-shelled – cephalopods, and crustacea, shelled) and the hard-shelled molluscs (bivalves and gastropods). He recognised that animals did not exactly fit into a linear scale, and noted various exceptions, such as that sharks had a placenta like the tetrapods. To a modern biologist, the explanation, not available to Aristotle, is convergent evolution. He believed that purposive final causes guided all natural processes; this teleological view justified his observed data as an expression of formal design.

## Psychology

### Soul

Aristotle's
psychology Psychology is the scientific Science () is a systematic enterprise that builds and organizes knowledge Knowledge is a familiarity or awareness, of someone or something, such as facts A fact is an occurrence in the real world. ...

, given in his treatise ''
On the Soul ''On the Soul'' (Greek#REDIRECT Greek Greek may refer to: Greece Anything of, from, or related to Greece Greece ( el, Ελλάδα, , ), officially the Hellenic Republic, is a country located in Southeast Europe. Its population is approxi ...
'' (''peri psychēs''), posits three kinds of soul ("psyches"): the vegetative soul, the sensitive soul, and the rational soul. Humans have a rational soul. The human soul incorporates the powers of the other kinds: Like the vegetative soul it can grow and nourish itself; like the sensitive soul it can experience sensations and move locally. The unique part of the human, rational soul is its ability to receive forms of other things and to compare them using the ''Nous#Aristotle, nous'' (intellect) and ''logos'' (reason). For Aristotle, the soul is the Hylomorphism#Body–soul hylomorphism, form of a living being. Because all beings are composites of form and matter, the form of living beings is that which endows them with what is specific to living beings, e.g. the ability to initiate movement (or in the case of plants, growth and chemical transformations, which Aristotle considers types of movement). In contrast to earlier philosophers, but in accordance with the Egyptians, he placed the rational soul in the heart, rather than the brain. Notable is Aristotle's division of sensation and thought, which generally differed from the concepts of previous philosophers, with the exception of Alcmaeon of Croton, Alcmaeon.

### Memory

According to Aristotle in ''On the Soul'', memory is the ability to hold a perceived experience in the mind and to distinguish between the internal "appearance" and an occurrence in the past. In other words, a memory is a mental picture (wikt:phantasm, phantasm) that can be recovered. Aristotle believed an impression is left on a semi-fluid bodily organ that undergoes several changes in order to make a memory. A memory occurs when stimulus (psychology), stimuli such as sights or sounds are so complex that the nervous system cannot receive all the impressions at once. These changes are the same as those involved in the operations of sensation, Aristotelian , and thinking. Aristotle uses the term 'memory' for the actual retaining of an experience in the impression that can develop from sensation, and for the intellectual anxiety that comes with the impression because it is formed at a particular time and processing specific contents. Memory is of the past, prediction is of the future, and sensation is of the present. Retrieval of impressions cannot be performed suddenly. A transitional channel is needed and located in past experiences, both for previous experience and present experience. Because Aristotle believes people receive all kinds of sense perceptions and perceive them as impressions, people are continually weaving together new impressions of experiences. To search for these impressions, people search the memory itself. Within the memory, if one experience is offered instead of a specific memory, that person will reject this experience until they find what they are looking for. Recollection occurs when one retrieved experience naturally follows another. If the chain of "images" is needed, one memory will stimulate the next. When people recall experiences, they stimulate certain previous experiences until they reach the one that is needed. Recollection is thus the self-directed activity of retrieving the information stored in a memory impression. Only humans can remember impressions of intellectual activity, such as numbers and words. Animals that have perception of time can retrieve memories of their past observations. Remembering involves only perception of the things remembered and of the time passed. Aristotle believed the chain of thought, which ends in recollection of certain impressions, was connected systematically in relationships such as similarity, contrast, and Contiguity (psychology), contiguity, described in his laws of association. Aristotle believed that past experiences are hidden within the mind. A force operates to awaken the hidden material to bring up the actual experience. According to Aristotle, association is the power innate in a mental state, which operates upon the unexpressed remains of former experiences, allowing them to rise and be recalled.

### Dreams

Aristotle describes sleep in ''On Sleep and Wakefulness''. Sleep takes place as a result of overuse of the senses or of digestion, so it is vital to the body. While a person is asleep, the critical activities, which include thinking, sensing, recalling and remembering, do not function as they do during wakefulness. Since a person cannot sense during sleep they cannot have desire, which is the result of sensation. However, the senses are able to work during sleep, albeit differently, unless they are weary. Dreams do not involve actually sensing a stimulus. In dreams, sensation is still involved, but in an altered manner. Aristotle explains that when a person stares at a moving stimulus such as the waves in a body of water, and then looks away, the next thing they look at appears to have a wavelike motion. When a person perceives a stimulus and the stimulus is no longer the focus of their attention, it leaves an impression. When the body is awake and the senses are functioning properly, a person constantly encounters new stimuli to sense and so the impressions of previously perceived stimuli are ignored. However, during sleep the impressions made throughout the day are noticed as there are no new distracting sensory experiences. So, dreams result from these lasting impressions. Since impressions are all that are left and not the exact stimuli, dreams do not resemble the actual waking experience. During sleep, a person is in an altered state of mind. Aristotle compares a sleeping person to a person who is overtaken by strong feelings toward a stimulus. For example, a person who has a strong infatuation with someone may begin to think they see that person everywhere because they are so overtaken by their feelings. Since a person sleeping is in a suggestible state and unable to make judgements, they become easily deceived by what appears in their dreams, like the infatuated person. This leads the person to believe the dream is real, even when the dreams are absurd in nature. In ''De Anima'' iii 3, Aristotle ascribes the ability to create, to store, and to recall images in the absence of perception to the faculty of imagination, ''phantasia''. One component of Aristotle's theory of dreams disagrees with previously held beliefs. He claimed that dreams are not foretelling and not sent by a divine being. Aristotle reasoned naturalistically that instances in which dreams do resemble future events are simply coincidences. Aristotle claimed that a dream is first established by the fact that the person is asleep when they experience it. If a person had an image appear for a moment after waking up or if they see something in the dark it is not considered a dream because they were awake when it occurred. Secondly, any sensory experience that is perceived while a person is asleep does not qualify as part of a dream. For example, if, while a person is sleeping, a door shuts and in their dream they hear a door is shut, this sensory experience is not part of the dream. Lastly, the images of dreams must be a result of lasting impressions of waking sensory experiences.

# Practical philosophy

Aristotle's practical philosophy covers areas such as
ethics Ethics or moral philosophy is a branch of philosophy that "involves systematizing, defending, and recommending concepts of right and wrong action (philosophy), behavior".''Internet Encyclopedia of Philosophy'"Ethics"/ref> The field of ethics, al ...

,
politics Politics (from , ) is the set of activities that are associated with Decision-making, making decisions in Social group, groups, or other forms of Power (social and political), power relations between individuals, such as the distribution of res ...

,
economics Economics () is a 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 interact ...

, and
rhetoric Rhetoric () is the art Art is a diverse range of (products of) human activities Humans (''Homo sapiens'') are the most populous and widespread species of primates, characterized by bipedality, opposable thumbs, hairlessness, and ...
.

## Just war theory

Aristotelian just war theory is not well regarded in the present day, especially his view that warfare was justified to enslave "natural slaves". In Aristotelian philosophy, the abolition of what he considers "natural slavery" would undermine civic freedom. The pursuit of freedom is inseparable from pursuing mastery over "those who deserve to be slaves". According to ''The Cambridge Companion to Aristotle's Politics'' the targets of this aggressive warfare were non-Greeks, noting Aristotle's view that "our poets say 'it is proper for Greeks to rule non-Greeks' ". Aristotle generally has a favourable opinion of war, extolling it as a chance for virtue and writing that "the leisure that accompanies peace" tends to make people "arrogant". War to "avoid becoming enslaved to others" is justified as self-defence. He writes that war "compels people to be just and temperate", however, in order to be just "war must be chosen for the sake of peace" (with the exception of wars of aggression discussed above).

## Ethics

Aristotle considered ethics to be a practical rather than theoretical study, i.e., one aimed at becoming good and doing good rather than knowing for its own sake. He wrote several treatises on ethics, including most notably, the ''
Nicomachean Ethics The ''Nicomachean Ethics'' (; grc, Ἠθικὰ Νικομάχεια, ) is the name normally given to 's best-known work on . The work, which plays a role in defining , consists of ten books, originally separate scrolls, and is understood to be ...
''. Aristotle taught that virtue has to do with the proper function (''ergon'') of a thing. An eye is only a good eye in so much as it can see, because the proper function of an eye is sight. Aristotle reasoned that humans must have a function specific to humans, and that this function must be an activity of the ''De Anima, psuchē'' (''soul'') in accordance with reason (''logos''). Aristotle identified such an optimum activity (the virtuous mean, between the accompanying vices of excess or deficiency) of the soul as the aim of all human deliberate action, ''eudaimonia'', generally translated as "happiness" or sometimes "well being". To have the potential of ever being happy in this way necessarily requires a good character (''ēthikē'' ''arete (moral virtue), aretē''), often translated as moral or ethical virtue or excellence. Aristotle taught that to achieve a virtuous and potentially happy character requires a first stage of having the fortune to be habituated not deliberately, but by teachers, and experience, leading to a later stage in which one consciously chooses to do the best things. When the best people come to live life this way their practical wisdom (''phronesis'') and their intellect (''nous'') can develop with each other towards the highest possible human virtue, the wisdom of an accomplished theoretical or speculative thinker, or in other words, a philosopher.

## Politics

In addition to his works on ethics, which address the individual, Aristotle addressed the city in his work titled ''
Politics Politics (from , ) is the set of activities that are associated with Decision-making, making decisions in Social group, groups, or other forms of Power (social and political), power relations between individuals, such as the distribution of res ...
''. Aristotle considered the city to be a natural community. Moreover, he considered the city to be prior in importance to the family which in turn is prior to the individual, "for the whole must of necessity be prior to the part". He famously stated that "man is by nature a political animal" and argued that humanity's defining factor among others in the animal kingdom is its rationality. Aristotle conceived of politics as being like an organism rather than like a machine, and as a collection of parts none of which can exist without the others. Aristotle's conception of the city is organic, and he is considered one of the first to conceive of the city in this manner. The common modern understanding of a political community as a modern state is quite different from Aristotle's understanding. Although he was aware of the existence and potential of larger empires, the natural community according to Aristotle was the city (''polis'') which functions as a political "community" or "partnership" (''koinōnia''). The aim of the city is not just to avoid injustice or for economic stability, but rather to allow at least some citizens the possibility to live a good life, and to perform beautiful acts: "The political partnership must be regarded, therefore, as being for the sake of noble actions, not for the sake of living together." This is distinguished from modern approaches, beginning with social contract theory, according to which individuals leave the state of nature because of "fear of violent death" or its "inconveniences." In ''Protrepticus (Aristotle), Protrepticus'', the character 'Aristotle' states: As Plato’s disciple Aristotle was rather skeptical concerning democracy and, following Plato's vague ideas, he developed a coherent theory of integrating various forms of power into a so-called mixed state: To illustrate this approach, Aristotle proposed a first-of-its-kind mathematical model of voting, albeit textually described, where the democratic principle of "one voter–one vote" is combined with the oligarchic "merit-weighted voting"; for relevant quotes and their translation into mathematical formulas see.

## Economics

Aristotle made substantial contributions to economics, economic thought, especially to thought in the Middle Ages. In ''
Politics Politics (from , ) is the set of activities that are associated with Decision-making, making decisions in Social group, groups, or other forms of Power (social and political), power relations between individuals, such as the distribution of res ...
'', Aristotle addresses the city, property, and trade. His response to criticisms of private property, in Lionel Robbins's view, anticipated later proponents of private property among philosophers and economists, as it related to the overall utility of social arrangements. Aristotle believed that although communal arrangements may seem beneficial to society, and that although private property is often blamed for social strife, such evils in fact come from human nature. In ''Politics'', Aristotle offers one of the earliest accounts of the origin of money. Money came into use because people became dependent on one another, importing what they needed and exporting the surplus. For the sake of convenience, people then agreed to deal in something that is intrinsically useful and easily applicable, such as iron or silver. Aristotle's discussions on retail and interest was a major influence on economic thought in the Middle Ages. He had a low opinion of retail, believing that contrary to using money to procure things one needs in managing the household, retail trade seeks to make a profit (economics), profit. It thus uses goods as a means to an end, rather than as an end unto itself. He believed that retail trade was in this way unnatural. Similarly, Aristotle considered making a profit through interest unnatural, as it makes a gain out of the money itself, and not from its use. Aristotle gave a summary of the function of money that was perhaps remarkably precocious for his time. He wrote that because it is impossible to determine the value of every good through a count of the number of other goods it is worth, the necessity arises of a single universal standard of measurement. Money thus allows for the association of different goods and makes them "commensurable". He goes on to state that money is also useful for future exchange, making it a sort of security. That is, "if we do not want a thing now, we shall be able to get it when we do want it".

## Rhetoric and poetics

Aristotle's ''Rhetoric'' proposes that a speaker can use three basic kinds of appeals to persuade his audience: ''ethos'' (an appeal to the speaker's character), ''pathos'' (an appeal to the audience's emotion), and ''logos'' (an appeal to logical reasoning). He also categorizes rhetoric into three genres: epideictic (ceremonial speeches dealing with praise or blame), Forensic rhetoric, forensic (judicial speeches over guilt or innocence), and Deliberative rhetoric, deliberative (speeches calling on an audience to make a decision on an issue). Aristotle also outlines two kinds of rhetorical Proof (truth), proofs: ''enthymeme'' (proof by syllogism) and ''paradeigma'' (proof by example). Aristotle writes in his ''Poetics'' that epic poetry, tragedy, comedy, Dithyramb, dithyrambic poetry, painting, sculpture, music, and dance are all fundamentally acts of ''mimesis'' ("imitation"), each varying in imitation by medium, object, and manner. He applies the term ''mimesis'' both as a property of a work of art and also as the product of the artist's intention and contends that the audience's realisation of the ''mimesis'' is vital to understanding the work itself. Aristotle states that ''mimesis'' is a natural instinct of humanity that separates humans from animals and that all human artistry "follows the pattern of nature". Because of this, Aristotle believed that each of the mimetic arts possesses what Stephen Halliwell (academic), Stephen Halliwell calls "highly structured procedures for the achievement of their purposes." For example, music imitates with the media of rhythm and harmony, whereas dance imitates with rhythm alone, and poetry with language. The forms also differ in their object of imitation. Comedy, for instance, is a dramatic imitation of men worse than average; whereas tragedy imitates men slightly better than average. Lastly, the forms differ in their manner of imitation – through narrative or character, through change or no change, and through drama or no drama. While it is believed that Aristotle's ''Poetics'' originally comprised two books – one on comedy and one on tragedy – only the portion that focuses on tragedy has survived. Aristotle taught that tragedy is composed of six elements: plot-structure, character, style, thought, spectacle, and lyric poetry. The characters in a tragedy are merely a means of driving the story; and the plot, not the characters, is the chief focus of tragedy. Tragedy is the imitation of action arousing pity and fear, and is meant to effect the catharsis of those same emotions. Aristotle concludes ''Poetics'' with a discussion on which, if either, is superior: epic or tragic mimesis. He suggests that because tragedy possesses all the attributes of an epic, possibly possesses additional attributes such as spectacle and music, is more unified, and achieves the aim of its mimesis in shorter scope, it can be considered superior to epic. Aristotle was a keen systematic collector of riddles, folklore, and proverbs; he and his school had a special interest in the riddles of the Pythia, Delphic Oracle and studied the fables of Aesop.

## Views on women

Aristotle's analysis of procreation describes an active, ensouling masculine element bringing life to an inert, passive female element. On this ground, proponents of feminist metaphysics have accused Aristotle of misogyny and sexism. However, Aristotle gave equal weight to women's happiness as he did to men's, and commented in his ''Rhetoric'' that the things that lead to happiness need to be in women as well as men.

# Influence

More than 2300 years after his death, Aristotle remains one of the most influential people who ever lived. He contributed to almost every field of human knowledge then in existence, and he was the founder of many new fields. According to the philosopher Bryan Magee, "it is doubtful whether any human being has ever known as much as he did". Among countless other achievements, Aristotle was the founder of formal logic, pioneered the study of
zoology Zoology ()The pronunciation of zoology as is usually regarded as nonstandard, though it is not uncommon. is the branch of biology that studies the Animal, animal kingdom, including the anatomy, structure, embryology, evolution, Biological class ...
, and left every future scientist and philosopher in his debt through his contributions to the scientific method. Taneli Kukkonen, writing in ''The Classical Tradition'', observes that his achievement in founding two sciences is unmatched, and his reach in influencing "every branch of intellectual enterprise" including Western ethical and political theory, theology, rhetoric and literary analysis is equally long. As a result, Kukkonen argues, any analysis of reality today "will almost certainly carry Aristotelian overtones ... evidence of an exceptionally forceful mind." Jonathan Barnes wrote that "an account of Aristotle's intellectual afterlife would be little less than a history of European thought".

## On his successor, Theophrastus

Aristotle's pupil and successor,
Theophrastus Theophrastus (; grc-gre, Θεόφραστος ; c. 371c. 287 BC), a Greek native of Eresos in Lesbos Island, Lesbos,Gavin Hardy and Laurence Totelin, ''Ancient Botany'', Routledge, 2015, p. 8. was the successor to Aristotle in the Peripatetic ...

, wrote the ''Historia Plantarum (Theophrastus), History of Plants'', a pioneering work in botany. Some of his technical terms remain in use, such as carpel from ''carpos'', fruit, and pericarp, from ''pericarpion'', seed chamber. Theophrastus was much less concerned with formal causes than Aristotle was, instead pragmatically describing how plants functioned.

## On later Greek philosophers

The immediate influence of Aristotle's work was felt as the Lyceum grew into the
Peripatetic school The Peripatetic school was a school of philosophy Philosophy (from , ) is the study of general and fundamental questions, such as those about reason, Metaphysics, existence, Epistemology, knowledge, Ethics, values, Philosophy of mind, m ...
. Aristotle's notable students included Aristoxenus, Dicaearchus, Demetrius of Phalerum, Eudemos of Rhodes, Harpalus, Hephaestion, Mnason of Phocis,
Nicomachus Nicomachus of Gerasa ( grc-gre, Νικόμαχος; c. 60 – c. 120 AD) was an important ancient mathematician best known for his works ''Introduction to Arithmetic'' and ''Manual of Harmonics'' in Ancient Greek, Greek. He was born in Gerasa ...
, and Theophrastus. Aristotle's influence over
Alexander the Great Alexander III of Macedon ( grc-gre, Αλέξανδρος}, ; 20/21 July 356 BC – 10/11 June 323 BC), commonly known as Alexander the Great, was a king (''basileus ''Basileus'' ( el, βασιλεύς) is a Greek term and title A title ...

is seen in the latter's bringing with him on his expedition a host of zoologists, botanists, and researchers. He had also learned a great deal about Persian people, Persian customs and traditions from his teacher. Although his respect for Aristotle was diminished as his travels made it clear that much of Aristotle's geography was clearly wrong, when the old philosopher released his works to the public, Alexander complained "Thou hast not done well to publish thy acroamatic doctrines; for in what shall I surpass other men if those doctrines wherein I have been trained are to be all men's common property?"

## On Hellenistic science

After Theophrastus, the Lyceum failed to produce any original work. Though interest in Aristotle's ideas survived, they were generally taken unquestioningly. It is not until the age of Alexandria under the Ptolemaic Kingdom, Ptolemies that advances in biology can be again found. The first medical teacher at Alexandria, Herophilos, Herophilus of Chalcedon, corrected Aristotle, placing intelligence in the brain, and connected the nervous system to motion and sensation. Herophilus also distinguished between veins and artery, arteries, noting that the latter pulse while the former do not. Though a few ancient atomism, atomists such as Lucretius challenged the teleology, teleological viewpoint of Aristotelian ideas about life, teleology (and after the rise of Christianity, natural theology) would remain central to biological thought essentially until the 18th and 19th centuries. Ernst Mayr states that there was "nothing of any real consequence in biology after Lucretius and Galen until the Renaissance."

## On Byzantine scholars

Greek Christian scribes played a crucial role in the preservation of Aristotle by copying all the extant Greek language manuscripts of the corpus. The first Greek Christians to comment extensively on Aristotle were Philoponus, Elias, and David in the sixth century, and Stephen of Alexandria in the early seventh century. John Philoponus stands out for having attempted a fundamental critique of Aristotle's views on the eternity of the world, movement, and other elements of Aristotelian thought. Philoponus questioned Aristotle's teaching of physics, noting its flaws and introducing the theory of impetus to explain his observations. After a hiatus of several centuries, formal commentary by Eustratius and Michael of Ephesus reappeared in the late eleventh and early twelfth centuries, apparently sponsored by Anna Comnena.

## On the medieval Islamic world

Aristotle was one of the most revered Western thinkers in early Islamic theology. Most of the still extant works of Aristotle, as well as a number of the original Greek commentaries, were translated into Arabic and studied by Muslim philosophers, scientists and scholars. Averroes, Avicenna and Alpharabius, who wrote on Aristotle in great depth, also influenced
Thomas Aquinas Thomas Aquinas (; it, Tommaso d'Aquino, lit=Thomas of Aquino, Italy, Aquino; 1225 – 7 March 1274) was an Italian Dominican Order, Dominican friar, Philosophy, philosopher, Catholic priest, and Doctor of the Church. An immensely influential ...

and other Western Christian scholastic philosophers. Alkindus greatly admired Aristotle's philosophy, and Averroes spoke of Aristotle as the "exemplar" for all future philosophers. Medieval Muslim scholars regularly described Aristotle as the "First Teacher". The title "teacher" was first given to Aristotle by Muslim scholars, and was later used by Western philosophers (as in the famous poem of Dante Alighieri, Dante) who were influenced by the tradition of Islamic philosophy.

## On medieval Europe

With the loss of the study of ancient Greek in the early medieval Latin West, Aristotle was practically unknown there from c. AD 600 to c. 1100 except through the Latin translation of the ''Organon'' made by Boethius. In the twelfth and thirteenth centuries, interest in Aristotle revived and Latin Christians had translations made, both from Arabic translations, such as those by Gerard of Cremona, and from the original Greek, such as those by James of Venice and William of Moerbeke. After the Scholasticism, Scholastic Thomas Aquinas wrote his ''Summa Theologica'', working from Moerbeke's translations and calling Aristotle "The Philosopher", the demand for Aristotle's writings grew, and the Greek language, Greek manuscripts returned to the West, stimulating a revival of Aristotelianism in Europe that continued into the
Renaissance The Renaissance ( , ) , from , with the same meanings. is a period Period may refer to: Common uses * Era, a length or span of time * Full stop (or period), a punctuation mark Arts, entertainment, and media * Period (music), a concept in ...

. These thinkers blended Aristotelian philosophy with Christianity, bringing the thought of Ancient Greece into the Middle Ages. Scholars such as Boethius,
Peter Abelard Peter Abelard (; french: link=no, Pierre Abélard; la, Petrus Abaelardus or ''Abailardus''; 21 April 1142) was a medieval In the history of Europe The history of Europe concerns itself with the discovery and collection, the study, or ...

, and
John Buridan Jean Buridan (; Latin Latin (, or , ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken in the area around Rome, known as Latium. Through the power of the Roman ...
worked on Aristotelian logic. The medieval English poet Geoffrey Chaucer, Chaucer describes his student as being happy by having A The tale of Phyllis and Aristotle, cautionary medieval tale held that Aristotle advised his pupil Alexander to avoid the king's seductive mistress, Phyllis, but was himself captivated by her, and allowed her to ride him. Phyllis had secretly told Alexander what to expect, and he witnessed Phyllis proving that a woman's charms could overcome even the greatest philosopher's male intellect. Artists such as Hans Baldung produced a series of illustrations of the popular theme. The Italian poet Dante says of Aristotle in ''The Divine Comedy'':

## On Early Modern scientists

In the Early Modern period, scientists such as William Harvey in England and Galileo Galilei in Italy reacted against the theories of Aristotle and other classical era thinkers like Galen, establishing new theories based to some degree on observation and experiment. Harvey demonstrated the circulation of the blood, establishing that the heart functioned as a pump rather than being the seat of the soul and the controller of the body's heat, as Aristotle thought. Galileo used more doubtful arguments to displace Aristotle's physics, proposing that bodies all fall at the same speed whatever their weight.

## On 19th-century thinkers

The 19th-century German philosopher Friedrich Nietzsche has been said to have taken nearly all of his political philosophy from Aristotle. Aristotle rigidly separated action from production, and argued for the deserved subservience of some people ("natural slaves"), and the natural superiority (virtue, ''arete'') of others. It was Martin Heidegger, not Nietzsche, who elaborated a new interpretation of Aristotle, intended to warrant his deconstruction of scholastic and philosophical tradition. The English mathematician George Boole fully accepted Aristotle's logic, but decided "to go under, over, and beyond" it with his system of Boolean algebra, algebraic logic in his 1854 book ''The Laws of Thought''. This gives logic a mathematical foundation with equations, enables it to solve equations as well as check Validity (logic), validity, and allows it to handle a wider class of problems by expanding propositions of any number of terms, not just two.

## Modern rejection and rehabilitation

During the 20th century, Aristotle's work was widely criticized. The philosopher Bertrand Russell argued that "almost every serious intellectual advance has had to begin with an attack on some Aristotelian doctrine". Russell called Aristotle's ethics "repulsive", and labelled his logic "as definitely antiquated as Ptolemaic astronomy". Russell stated that these errors made it difficult to do historical justice to Aristotle, until one remembered what an advance he made upon all of his predecessors. The Dutch historian of science Eduard Jan Dijksterhuis wrote that Aristotle and his predecessors showed the difficulty of science by "proceed[ing] so readily to frame a theory of such a general character" on limited evidence from their senses. In 1985, the biologist Peter Medawar could still state in "pure seventeenth century" tones that Aristotle had assembled "a strange and generally speaking rather tiresome farrago of hearsay, imperfect observation, wishful thinking and credulity amounting to downright gullibility". By the start of the 21st century, however, Aristotle was taken more seriously: Kukkonen noted that "In the best 20th-century scholarship Aristotle comes alive as a thinker wrestling with the full weight of the Greek philosophical tradition." Alasdair MacIntyre has attempted to reform what he calls the Aristotelian tradition in a way that is anti-elitist and capable of disputing the claims of both liberals and Nietzscheans. Kukkonen observed, too, that "that most enduring of romantic images, Aristotle tutoring the future conqueror Alexander" remained current, as in the 2004 film ''Alexander (2004 film), Alexander'', while the "firm rules" of Aristotle's theory of drama have ensured a role for the ''Poetics'' in Cinema of the United States, Hollywood. Biologists continue to be interested in Aristotle's thinking. Armand Marie Leroi has reconstructed Aristotle's biology, while Tinbergen's four questions, Niko Tinbergen's four questions, based on Aristotle's four causes, are used to analyse animal behaviour; they examine function (biology), function, phylogeny, mechanism (biology), mechanism, and ontogeny.

# Surviving works

## Corpus Aristotelicum

The works of Aristotle that have survived from antiquity through medieval manuscript transmission are collected in the Corpus Aristotelicum. These texts, as opposed to Aristotle's lost works, are technical philosophical treatises from within Aristotle's school. Reference to them is made according to the organization of Immanuel Bekker's Royal Prussian Academy edition (''Aristotelis Opera edidit Academia Regia Borussica'', Berlin, 1831–1870), which in turn is based on ancient classifications of these works.

## Loss and preservation

Aristotle wrote his works on papyrus scrolls, the common writing medium of that era. His writings are divisible into two groups: the "exoteric", intended for the public, and the "esoteric", for use within the
Lyceum The lyceum is a category of educational institution An educational institution is a place where people of different ages gain an education, including preschools, childcare, primary-elementary schools, secondary-high schools, and universities. ...
school. Aristotle's "lost" works stray considerably in characterization from the surviving Aristotelian corpus. Whereas the lost works appear to have been originally written with a view to subsequent publication, the surviving works mostly resemble lecture notes not intended for publication. Cicero's description of Aristotle's literary style as "a river of gold" must have applied to the published works, not the surviving notes. A major question in the history of Aristotle's works is how the exoteric writings were all lost, and how the ones now possessed came to be found. The consensus is that Andronicus of Rhodes collected the esoteric works of Aristotle's school which existed in the form of smaller, separate works, distinguished them from those of Theophrastus and other Peripatetics, edited them, and finally compiled them into the more cohesive, larger works as they are known today.

# Legacy

## Depictions

;Paintings Aristotle has been depicted by major artists including Lucas Cranach the Elder, Justus van Gent, Raphael, Paolo Veronese, Jusepe de Ribera, Rembrandt, and Francesco Hayez over the centuries. Among the best-known depictions is Raphael's fresco ''The School of Athens'', in the Apostolic Palace, Vatican's Apostolic Palace, where the figures of Plato and Aristotle are central to the image, at the architectural vanishing point, reflecting their importance. Rembrandt's ''Aristotle with a Bust of Homer'', too, is a celebrated work, showing the knowing philosopher and the blind Homer from an earlier age: as the art critic Jonathan Jones (journalist), Jonathan Jones writes, "this painting will remain one of the greatest and most mysterious in the world, ensnaring us in its musty, glowing, pitch-black, terrible knowledge of time." File:Aristotle in Nuremberg Chronicle.jpg , ''Nuremberg Chronicle'' anachronism, anachronistically shows Aristotle in a medieval scholar's clothing. Ink and watercolour on paper, 1493 File:Gent, Justus van - Aristotle - c. 1476.jpg , ''Aristotle'' by Justus van Gent. Oil on panel, c. 1476 File:Lucas Cranach d.Ä. - Phyllis und Aristotle (1530).jpg , ''Phyllis and Aristotle'' by Lucas Cranach the Elder. Oil on panel, 1530 File:Biblioteka Marciana, Aristotel.jpg , ''Aristotle'' by Paolo Veronese, Biblioteka Marciana. Oil on canvas, 1560s File:Turchi-AristoteIMG 1713.JPG , ''Aristotle and Campaspe'', Alessandro Turchi (attrib.) Oil on canvas, 1713 File:Aristotle by Jusepe de Ribera.jpg , ''Aristotle (Ribera painting), Aristotle'' by Jusepe de Ribera. Oil on canvas, 1637 File:Rembrandt - Aristotle with a Bust of Homer - WGA19232.jpg , ''Aristotle with a Bust of Homer'' by Rembrandt. Oil on canvas, 1653 File:Johann Jakob Dorner d Ä (attr) Aristoteles.jpg , ''Aristotle'' by Johann Jakob Dorner the Elder. Oil on canvas, by 1813 File:Francesco Hayez 001.jpg , ''Aristotle'' by Francesco Hayez. Oil on canvas, 1811 ;Sculptures File:Aristoteles Louvre.jpg, Roman copy of 1st or 2nd century from original bronze by Lysippos. Louvre Museum File:DSC00218 - Aristotele - Copia romana del 117-138 dC. - Foto di G. Dall'Orto.jpg, Roman copy of 117-138 AD of Greek original. Palermo Regional Archeology Museum File:Formella 21, platone e aristotele o la filosofia, luca della robbia, 1437-1439.JPG, Relief of Aristotle and Plato by Luca della Robbia, Florence Cathedral, 1437-1439 File:Llyfrgell Sant Deiniol and Gladstone's Library Hawarden Penarlâg 05.JPG, Stone statue in niche, Gladstone's Library, Hawarden, Wales, 1899 File:Uni Freiburg - Philosophen 4.jpg, Bronze statue, University of Freiburg, Germany, 1915

## Eponyms

The Aristotle Mountains in Antarctica are named after Aristotle. He was the first person known to conjecture, in his book ''Meteorology (Aristotle), Meteorology'', the existence of a landmass in the southern high-latitude region and called it ''Antarctica''. Aristoteles (crater), Aristoteles is a crater on the Moon bearing the classical form of Aristotle's name.

* Aristotelian Society * Conimbricenses * Perfectionism (philosophy), Perfectionism

# References

## Sources

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

The secondary literature on Aristotle is vast. The following is only a small selection. * J. L. Ackrill, Ackrill, J. L. (1997). ''Essays on Plato and Aristotle'', Oxford University Press. * * * * These translations are available in several places online; see External links. * Bakalis, Nikolaos. (2005). ''Handbook of Greek Philosophy: From Thales to the Stoics Analysis and Fragments'', Trafford Publishing, . * * Bolotin, David (1998). ''An Approach to Aristotle's Physics: With Particular Attention to the Role of His Manner of Writing.'' Albany: SUNY Press. A contribution to our understanding of how to read Aristotle's scientific works. * Myles Burnyeat, Burnyeat, Myles F. ''et al.'' (1979). ''Notes on Book Zeta of Aristotle's Metaphysics''. Oxford: Sub-faculty of Philosophy. * * * Code, Alan (1995). Potentiality in Aristotle's Science and Metaphysics, Pacific Philosophical Quarterly 76. * * * De Groot, Jean (2014). ''Aristotle's Empiricism: Experience and Mechanics in the 4th century BC'', Parmenides Publishing, . * Frede, Michael (1987). ''Essays in Ancient Philosophy''. Minneapolis: University of Minnesota Press. * * Eugene Gendlin, Gendlin, Eugene T. (2012).
Line by Line Commentary on Aristotle's De Anima
'', Volume 1: Books I & II; Volume 2: Book III. The Focusing Institute. * Gill, Mary Louise (1989). ''Aristotle on Substance: The Paradox of Unity''. Princeton University Press. * * * * * * Alberto Jori, Jori, Alberto (2003). ''Aristotele'', Bruno Mondadori (Prize 2003 of the "International Academy of the History of Science"), . * * Knight, Kelvin (2007). ''Aristotelian Philosophy: Ethics and Politics from Aristotle to MacIntyre'', Polity Press. * Lewis, Frank A. (1991). ''Substance and Predication in Aristotle''. Cambridge University Press. * Lord, Carnes (1984). ''Introduction to ''The Politics'', by Aristotle''. Chicago University Press. * Loux, Michael J. (1991). Primary Ousia: An Essay on Aristotle's Metaphysics Ζ and Η. Ithaca, NY: Cornell University Press. * Maso, Stefano (Ed.), Natali, Carlo (Ed.), Seel, Gerhard (Ed.) (2012) ''Reading Aristotle: Physics'' VII. 3: ''What is Alteration?'' ''Proceedings of the International ESAP-HYELE Conference'', Parmenides Publishing. . * * [Reprinted in J. Barnes, M. Schofield, and R.R.K. Sorabji, eds.(1975). ''Articles on Aristotle'' Vol 1. Science. London: Duckworth 14–34.] * * * Reeve, C. D. C. (2000). ''Substantial Knowledge: Aristotle's Metaphysics''. Hackett. * * * Scaltsas, T. (1994). ''Substances and Universals in Aristotle's Metaphysics''. Cornell University Press. * Strauss, Leo (1964). "On Aristotle's ''Politics''", in ''The City and Man'', Rand McNally. * * *

* * * * At the Internet Encyclopedia of Philosophy: *: * At th
Internet Classics Archive
* From the Stanford Encyclopedia of Philosophy: *: * * ;Collections of works * A
Massachusetts Institute of Technology
* * * *
Perseus Project
at Tufts University * At th