Epaminondas, a famous Theban statesman and soldier, defeated Sparta in the great victory of Leuctra, and during his lifetime raised Thebes to a position of dominant power; was slain in the battle of Mantinea when again successfully engaging the Spartans; blameless in his private life as he was heroic in the field, he figures as the great hero of Theban history; born about the close of the 5th century B.C.