Protagorean

One might, for example, easily compare the Pyrrhonian conviction that there are equally convincing arguments for and against any claim to the Protagorean view that one can argue equally convincingly on both sides of any question.

Ancient Skepticism Groarke, Leo 2008

Protagorean relativism may be expressed by the view that man is the measure of all things.

Dialetheism Priest, Graham 2008

It is this perverted form of the Heraclitean philosophy which is supposed to effect the final overthrow of Protagorean sensationalism.

Theaetetus 2007

And so the Protagorean fable came to nought, and yours also, who maintained that knowledge is the same as perception.

Theaetetus 2007

In Metaphysics IV 6, Aristotle explains how a Protagorean PNC-skeptic ought to present his view so as to avoid violating PNC:

Aristotle on Non-contradiction Gottlieb, Paula 2007

Thus the flux of Homer and Heracleitus, the great Protagorean saying that “Man is the measure of all things,” the doctrine of Theaetetus that “Knowledge is perception,” have all the same meaning.

Theaetetus 2007

The saying that ‘All knowledge is sensation’ is identified by Plato with the Protagorean thesis that ‘Man is the measure of all things.’

Theaetetus 2007

This is speedily identified with the Protagorean saying, ‘Man is the measure of all things;’ and of this again the foundation is discovered in the perpetual flux of

Theaetetus 2007

But soon the Protagorean thesis is pronounced to be suicidal; for the adversaries of Protagoras are as good a measure as he is, and they deny his doctrine.

Theaetetus 2007

Cratylus, in which the principles of rest and motion are again contrasted, and the Sophistical or Protagorean theory of language is opposed to that which is attributed to the disciple of

Theaetetus 2007