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Plato (c. 429—347 bc)

Protagoras (c. 490—420 bc)

Epicurus (341—270 bc) Greek philosopher, founder of Epicureanism

Sextus Empiricus (fl. c. 200)


'peritrope' can also refer to...


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The turning of the tables, whereby Plato (Theaetetus, 171 a) opposes the relativism of Protagoras. Protagoras holds the doctrine that whatever seems true for a person is true for them; hence he must accept that those who believe that the doctrine of Protagoras is false are right: its falsity is true for them. It became a standard form of argument, used by both Epicurus and Sextus Empiricus. See also Ishmael effect.

Subjects: Philosophy.

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