Aeschylus (525/524 – c. 456/455 BC) was an ancient Greek tragedian. He is one of those tragedians whose plays still survive. Most part of critics consider and describe that he is the father of such theater phenomenon as tragedy. He is also the first whose plays still survive. He is often described as the father of tragedy due to expanding a number of characters in plays to allow conflict among them whereas characters previously had interacted only with the chorus. It is well known that roots of Greek drama lie in religious festivals for the gods, chiefly Dionysus, the god of wine. During Aeschylus's lifetime he wrote numerous tragic plays in which he even took his own part. Nowadays only seven tragedies have survived and here is one of it, a trilogy of Greek tragedies named “Oresteia”. The final part of “Oresteia” addresses the question of Orestes' guilt. Read the best example of Greek tragedy to the end if you want to find out the end of central intrigue between Clytemnestra and Agamemnon.