Thrasymachus

Thrasymachus (; ; c. 459 – c. 400 BC) was a sophist of ancient Greece best known as a character in Plato's Republic.

==Life, date, and career== Thrasymachus was a citizen of Chalcedon, on the Bosphorus. His career appears to have been spent as a sophist at Athens, although the exact nature of his work and thought is unclear. He is credited with an increase in the rhythmic character of Greek oratory, especially the use of the paeonic rhythm in prose, and a greater appeal to the emotions through gesture.