Hippias (2) of *Elis, *sophist, a younger contemporary of *Protagoras. He acquired great fame and wealth as a teacher and orator, claiming competence in mathematics, astronomy, grammar, poetry, music, and history, as well as in various handicrafts and in mnemonic techniques. He is perhaps (but see following entry) to be identified with the *Hippias(3) reported by Proclus as having discovered the quadratrix, a curve used in attempts to square the circle. His voluminous works included an elegy on the drowning of a chorus of boys from *Messenia, a collection of historical material, a list of Olympian victors (see
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