Sophocles was born in Colona and attended Antiphon's rhetoric classes and Lampros's music classes. Treasury administrator of the Attic Confederation, in 441 he was elected strategist along with Pericles. Nonagenarian passed away, shortly after Euripides' death. He is credited with some one hundred and thirty tragedies, of which only seven remain, and he was an innovator in the technique of tragedy. His are the addition of the third act and the composition of independent dramas, free from the link of the trilogy. Both Antigone and Electra, two of the greatest works of Greek literature, are exponents of human greatness, which even in misfortune retains its heroism intact.