Dionysius of Chalcedon
Dionysius of Chalcedon (Greek: Διονύσιος; fl. 320 BC) was a Greek philosopher and dialectician connected with the Megarian school. He was a native of Chalcedon on the coast of Bithynia. Dionysius was the person who first used the name Dialecticians to describe a splinter group within the Megarian school "because they put their arguments into the form of question and answer". One area of activity for the dialecticians was the framing of definitions, and Aristotle criticises a definition of life by Dionysius in his Topics:
This is, moreover, what happens to Dionysius' definition of "life" when stated as "a movement of a creature sustained by nutriment, congenitally present with it"
- Dorandi, Tiziano (1999). "Chapter 2: Chronology". In Algra, Keimpe; et al. The Cambridge History of Hellenistic Philosophy. Cambridge: Cambridge University Press. p. 47. ISBN 9780521250283.
- Craig, Edward (1998). "Dialectical School". Routledge Encyclopedia of Philosophy. ISBN 978-0415073103.
- Laërtius, Diogenes (1925). "Socrates, with predecessors and followers: Anaximander". Lives of the Eminent Philosophers. 1:2. Translated by Hicks, Robert Drew (Two volume ed.). Loeb Classical Library. § 98, 106.