Definition of "pre-socratic" []

• Before the time of Socrates (adjective)
• Any philosopher who lived before Socrates (noun)

WordNet. Princeton University. 2010.

• "Heraclitus of Ephesus is pre-socratic and his main doctrine, called "mobilism" I think, is indeed about how things are always changing and becoming, part of a constant flux that makes it impossible to see them as fixed, definable objects."
• "A decisive step was reached with the thought on Inhabitation, which I think corresponds to the thinking Heidegger envisaged as that which would succeed his, viz. pre-socratic in feel if not in style, where poetic creation and philosophy become one and emphasis on the concept "world"."
• "Many of the pre-socratic philosophers in fact had a concept of substance rather like that above attributed to chemistry: that is, their emphasis was on criterion (vi) above."