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[152a] that you have given, but one which Protagoras also used to give. Only, he has said the same thing in a different way. For he says somewhere that man is “the measure of all things, of the existence of the things that are and the non-existence of the things that are not.” You have read that, I suppose?

Theaetetus
Yes, I have read it often.

Socrates
Well, is not this about what he means, that individual things are for me such as they appear to me, and for you in turn such as they appear to you —you and I being “man”?

Theaetetus
Yes, that is what he says.


Plato. Plato in Twelve Volumes, Vol. 12 translated by Harold N. Fowler. Cambridge, MA, Harvard University Press; London, William Heinemann Ltd. 1921.

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  • Commentary references to this page (1):
    • J. Adam, A. M. Adam, Commentary on Plato, Protagoras, FRAGMENTS
  • Cross-references to this page (1):
    • Raphael Kühner, Bernhard Gerth, Ausführliche Grammatik der griechischen Sprache, KG 1.4.2
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