There were many more Sophists in the changing Greek society of the fifth century B.C.E. than during other periods. Based on ancient secondary sources, the main ones, whose home base was in Athens, were: Gorgias of Leontini (c. 485–380 B.C.E.), Protagoras of Abdera (c. 490–420 B.C.E.), Hippias of Elis (c. 460–c. 400 B.C.E.), Prodicus of Ceos (c. 465–415 B.C.E.), and Thrasymachus (c. 459–400 B.C.E.).