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Acatalepsy
In philosophy, acatalepsy (from the Greek ἀκαταληψία "inability to comprehend" from alpha privative and καταλαμβάνειν, "to seize") is incomprehensibleness, or the impossibility of comprehending or conceiving a thing. It is the antithesis of the Stoic doctrine of katalepsis (i.e., the ability to apprehend).George Henry Lewes, 1863, ''The biographical history of philosophy'', Volume 1, page 297 According to the Stoics, katalepsis was true perception, but to the Pyrrhonists and Academic Skeptics, no perception could be known to be true. All perceptions were thus acataleptic, i.e. what, if any, conformity between the object and the perception of that object was unknown and, for the Academic Skeptics, could never be known. For the Academic Skeptics, acatalepsy meant that human knowledge never amounts to certainty, but only to plausibility. For the Pyrrhonists it meant that knowledge was limited to the ''phantasiai'' (typically translated as "appearances ...
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Pyrrhonism
Pyrrhonism is a school of philosophical skepticism founded by Pyrrho in the fourth century BCE. It is best known through the surviving works of Sextus Empiricus, writing in the late second century or early third century CE. History Pyrrho of Elis (c. 360 – c. 270 BCE) and his teacher Anaxarchus, both Democritean philosophers, traveled to India with Alexander the Great's army where Pyrrho was said to have studied with the magi and the gymnosophists, and where he was influenced by Buddhist teachings, most particularly the three marks of existence. After returning to Greece, Pyrrho started a new line of philosophy now known as "Pyrrhonism." His teachings were recorded by his student Timon of Phlius, most of whose works have been lost. Pyrrhonism as a school was either revitalized or re-founded by Aenesidemus in the first century BCE. This phase of Pyrrhonism, starting with Aenesidemus and going through the last known Pyrrhonist of antiquity, Saturninus, is sometimes referred ...
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Epistemological Theories
Epistemology (; ), or the theory of knowledge, is the branch of philosophy concerned with knowledge. Epistemology is considered a major subfield of philosophy, along with other major subfields such as ethics, logic, and metaphysics. Epistemologists study the nature, origin, and scope of knowledge, epistemic justification, the rationality of belief, and various related issues. Debates in epistemology are generally clustered around four core areas: # The philosophical analysis of the nature of knowledge and the conditions required for a belief to constitute knowledge, such as truth and justification # Potential sources of knowledge and justified belief, such as perception, reason, memory, and testimony # The structure of a body of knowledge or justified belief, including whether all justified beliefs must be derived from justified foundational beliefs or whether justification requires only a coherent set of beliefs # Philosophical skepticism, which questions the possibi ...
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Skepticism
Skepticism, also spelled scepticism, is a questioning attitude or doubt toward knowledge claims that are seen as mere belief or dogma. For example, if a person is skeptical about claims made by their government about an ongoing war then the person doubts that these claims are accurate. In such cases, skeptics normally recommend not disbelief but suspension of belief, i.e. maintaining a neutral attitude that neither affirms nor denies the claim. This attitude is often motivated by the impression that the available evidence is insufficient to support the claim. Formally, skepticism is a topic of interest in philosophy, particularly epistemology. More informally, skepticism as an expression of questioning or doubt can be applied to any topic, such as politics, religion, or pseudoscience. It is often applied within restricted domains, such as morality (moral skepticism), atheism (skepticism about the existence of God), or the supernatural. Some theorists distinguish "good" or mode ...
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Two Truths Doctrine
The Buddhist doctrine of the two truths (Sanskrit: ''dvasatya,'' ) differentiates between two levels of ''satya'' (Sanskrit; Pali: ''sacca''; word meaning "truth" or "reality") in the teaching of the Śākyamuni Buddha: the "conventional" or "provisional" ('' saṁvṛti'') truth, and the "ultimate" (''paramārtha'') truth. The exact meaning varies between the various Buddhist schools and traditions. The best known interpretation is from the Madhyamaka school of Mahāyāna Buddhism, whose founder was the Indian Buddhist monk and philosopher Nāgārjuna. For Nāgārjuna, the two truths are ''epistemological truths''. The phenomenal world is accorded a provisional existence. The character of the phenomenal world is declared to be neither real nor unreal, but logically indeterminable. Ultimately, all phenomena are empty (''śūnyatā'') of an inherent self or essence due to the non-existence of the self (''anattā''), but exist depending on other phenomena (''pratītyasamutpā ...
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Katalepsis
''Katalepsis'' ( el, κατάληψις, "grasping") in Stoic philosophy, that meant comprehension. To the Stoic philosophers, ''katalepsis'' was an important premise regarding one's state of mind as it relates to grasping fundamental philosophical concepts, and it represents the Stoic solution to the problem of the criterion. Stoicism According to the Stoics, the mind is constantly being bombarded with impressions (''phantasiai''). (An impression arising from the mind was called a '' phantasma''.) Some of these impressions are true and some false. Impressions are true when they are truly affirmed, false if they are wrongly affirmed, such as when one believes an oar dipped in the water to be broken because it appears so.George Henry Lewes (1880), ''The history of philosophy: from Thales to Comte'', p. 360 When Orestes, in his madness, mistook Electra for a Fury, he had an impression both true and false: true inasmuch as he saw something, viz., Electra; false, inasmuch as Ele ...
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Knowledge
Knowledge can be defined as Descriptive knowledge, awareness of facts or as Procedural knowledge, practical skills, and may also refer to Knowledge by acquaintance, familiarity with objects or situations. Knowledge of facts, also called propositional knowledge, is often defined as Truth, true belief that is distinct from opinion or guesswork by virtue of Justification (epistemology), justification. While there is wide agreement among philosophers that propositional knowledge is a form of true belief, many controversies in philosophy focus on justification: whether it is needed at all, how to understand it, and whether something else besides it is needed. These controversies intensified due to a series of Gettier problem#Gettier's two original counterexamples, thought experiments by Edmund Gettier and have provoked various alternative definitions. Some of them deny that justification is necessary and replace it, for example, with Reliabilism, reliability or the manifestation o ...
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Thing-in-itself
In Kantian philosophy, the thing-in-itself (german: Ding an sich) is the status of objects as they are, independent of representation and observation. The concept of the thing-in-itself was introduced by the German philosopher Immanuel Kant, and over the following centuries was met with controversy among later philosophers. It is closely related to Kant's concept of noumena or the object of inquiry, as opposed to phenomenon, its manifestations. Kantian philosophy In his doctrine of transcendental idealism, Kant argued the sum of all objects, the empirical world, is a complex of appearances whose existence and connection occur only in our representations. Kant introduces the thing-in-itself as follows: Criticism F. H. Jacobi The first to criticize the concept of a thing-in-itself was F. H. Jacobi, with the expression: G. E. Schulze The anonymously published work ''Aenesidemus'' was one of the most successful attacks against the project of Kant. According to Kant’s teachi ...
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Śūnyatā
''Śūnyatā'' ( sa, शून्यता, śūnyatā; pi, suññatā) pronounced in English as (shoon-ya-ta), translated most often as ''emptiness'', ''vacuity'', and sometimes ''voidness'', is a Buddhist concept which has multiple meanings depending on its doctrinal context. It is either an ontological feature of reality, a meditative state, or a phenomenological analysis of experience. In Theravāda Buddhism, ''Suññatā'' often refers to the non-self (Pāli: ''anattā'', Sanskrit: ''anātman'') nature of the five aggregates of experience and the six sense spheres. ''Suññatā'' is also often used to refer to a meditative state or experience. In Mahāyāna Buddhism, ''śūnyatā'' refers to the tenet that "all things are empty of intrinsic existence and nature (''svabhava'')", but may also refer to the Buddha-nature teachings and primordial or empty awareness, as in Dzogchen, Shentong, or Chan. Etymology "''Śūnyatā''" (Sanskrit) is usually translated as " ...
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Strong Agnosticism
Agnosticism is the view or belief that the existence of God, of the divine or the supernatural is unknown or unknowable. (page 56 in 1967 edition) Another definition provided is the view that "human reason is incapable of providing sufficient rational grounds to justify either the belief that God exists or the belief that God does not exist." The English biologist Thomas Henry Huxley coined the word ''agnostic'' in 1869, and said "It simply means that a man shall not say he knows or believes that which he has no scientific grounds for professing to know or believe." Earlier thinkers, however, had written works that promoted agnostic points of view, such as Sanjaya Belatthaputta, a 5th-century BCE Indian philosopher who expressed agnosticism about any afterlife;Bhaskar (1972). and Protagoras, a 5th-century BCE Greek philosopher who expressed agnosticism about the existence of "the gods". Defining agnosticism Being a scientist, above all else, Huxley presented agnosti ...
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New Mysterianism
New mysterianism, or commonly just mysterianism, is a philosophical position proposing that the hard problem of consciousness cannot be resolved by humans. The unresolvable problem is how to explain the existence of qualia (individual instances of subjective, conscious experience). In terms of the various schools of philosophy of mind, mysterianism is a form of nonreductive physicalism. Some "mysterians" state their case uncompromisingly (Colin McGinn has said that consciousness is "a mystery that human intelligence will never unravel"); others believe merely that consciousness is not within the grasp of present human understanding, but may be comprehensible to future advances of science and technology. Name Owen Flanagan noted in his 1991 book ''Science of the Mind'' that some modern thinkers have suggested that consciousness may never be completely explained. Flanagan called them "the new mysterians" after the rock group Question Mark and the Mysterians. "But the new mysteri ...
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Ignoramus Et Ignorabimus
The Latin maxim , meaning "we do not know and will not know", represents the idea that scientific knowledge is limited. It was popularized by Emil du Bois-Reymond, a German physiologist, in his 1872 address ("The Limits of Science"). Seven "World Riddles" Emil du Bois-Reymond first used the words and at the close of his keynote address to the 1872 Congress of German Scientists and Physicians. As he saw it, science was bounded by two limits: the ultimate nature of matter and the enigma of consciousness. Eight years later, in a speech before the Prussian Academy of Sciences, he expanded his list of conundrums to seven "world riddles" or "shortcomings" of science. Three of these he declared to be " transcendent", or permanently unknowable: "1. the ultimate nature of matter and energy, 2. the origin of motion, ... 5. the origin of simple sensations." Hilbert's reaction David Hilbert, a widely-respected German mathematician, suggested that such a conceptualization of hu ...
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I Know That I Know Nothing
"I know that I know nothing" is a saying derived from Plato's account of the Greek philosopher Socrates: ''"For I was conscious that I knew practically nothing..."'' (Plato, Apology 22d, translated by Harold North Fowler, 1966). Socrates himself was never recorded as having said this phrase, and scholars generally agree that Socrates only ever asserted that he ''believed that he knew nothing'', having never claimed that he ''knew that he knew nothing''. It is also sometimes called the Socratic paradox, although this name is often instead used to refer to other seemingly paradoxical claims made by Socrates in Plato's dialogues (most notably, Socratic intellectualism and the Socratic fallacy). This saying is also connected or conflated with the answer to a question Socrates (according to Xenophon) or Chaerephon (according to Plato) is said to have posed to the Pythia, the Oracle of Delphi, in which the oracle stated something to the effect of "Socrates is the wisest person in ...
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