Aeschylus

n. (525-456 BC) poet and dramatist of ancient Greece

Aeschylus (Greek: Ασχύλος, IPA: or , 525 BC/524 BC –  456 BC) was an ancient Greek playwright. He is often recognized as the father or the founder of tragedy, and is the earliest of the three Greek tragedians whose plays survive, the others being Sophocles and Euripides. He expanded the number of characters in plays to allow for conflict between them; previously, characters interacted only with the  chorus. Unfortunately, only seven of the estimated seventy plays written by Aeschylus have survived into modern times.
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Noun
1. Greek tragedian; the father of Greek tragic drama (525-456 BC)
(hypernym) dramatist, playwright

Aeschylus One of the three greatest Greek tragic poets, born at Eleusis (525-456 BC), the seat of the Mysteries of Demeter, into which he undoubtedly was initiated. Of his perhaps 90 plays, only seven survive. Plato accuses him of impiety and Cicero describes him as almost a Pythagorean. He profaned the Mysteries in the eyes of the Athenians (e.g. in the real meaning of the allegories present in Prometheus Bound and The Eumenides) and has been accused of introducing antagonism among the celestial powers, transferring the political radicalism and demagogy of Athens from the agora to Olympus. His works introduced a second actor, thus creating true dramatic dialogue; he also introduced masks and imposing headdresses and costumes for the actors.
His portrayal of Zeus in different dramas is inconsistent, since there were two Zeuses: the abstract deity of Grecian thought, and the Olympic Zeus. While the former represents the head of the hierarchy of divinities, the latter is, in man, the human soul or kama-manas. Prometheus, who steals fire from heaven and brings it to mankind in a fennel-stalk, is buddhi-manas, mankind's savior. Zeus is the serpent, the intellectual tempter of humanity, which nevertheless begets in due time the man-savior, the solar Dionysus (SD 2:419-20). Harmony results from the equilibrium of contraries, and the drama of evolution as depicted in man shows the clash of descending and reascending cycles, the antimony of law and free will. These dramas have been immortalized for all generations by Aeschylus who, in his daring and self-sacrificing enthusiasm, may himself by styled a Prometheus offending the powers that be in order to bring light to mankind.

ESCHILO