Protagoras: The Sophist Who Made Man the Measure of All Things

Protagoras, the first Sophist, is credited with shifting ancient Greek philosophy from cosmological to anthropological concerns. Born around 490 BC, he arrived in Athens between 450 and 444 BC and became a prominent figure, associating with Pericles, Socrates, and Euripides. His famous dictum, "Man is the measure of all things," from his work "Truth," has been interpreted by Plato and Aristotle in subjective terms, though the debate over its meaning remains unresolved. Protagoras's teachings elevated human reason above mythology and tradition, challenging aristocratic education and promoting relativism in ethics. He also expressed skepticism about the gods in "On the Gods," asserting human inability to know the divine. His contributions to dialectics and rhetoric influenced Western legal reasoning. Socrates opposed the Sophists for charging fees and for their relativistic views, but Protagoras's impact on philosophy is undeniable.