<history of philosophy, biography> presocratic philosopher (485-415 BC); one of the sophists. Protagoras is best known for the relativistic assertion that human beings are "the measure of all things". Recommended Reading: G. S. Kirk and J. E. Raven, The Presocratic Philosophers: A Critical History With a Selection of Texts (Cambridge, 1988) and Jonathan Barnes, The Presocratic Philosophers (Routledge, 1982).
[A Dictionary of Philosophical Terms and Names]
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