Born in Athens about 430 b.c.; died after 357; celebrated as historian and essayist, being a disciple of Socrates; joined the expedition of Cyrus the Younger in 401, and after the battle of Cunaxa became the chief leader of ten thousand Greeks in their march to the Black Sea, the story being chronicled in his famous "Anabasis"; fought on the Spartan side in the battle of Coronea; banished from Athens, he settled at Scillus in Eleia; spent his last years in Corinth; among his writings besides the "Anabasis" are the "Hellenica," "CycropÆdia," "Memorabilia of Socrates," and essays on hunting and horsemanship.