His plays were written in the strict style of Greek drama. They were in verse and no violence could be performed on stage. The plays had to be set away from normal life in Athens, either by telling stories about the gods or by being set, like "The Persians", in a far-away place. Aeschylus' work has a strong moral and religious emphasis. The "Oresteia" plays were about man's position in the universe in relation to the gods, the laws of the gods, and punishment from the gods.