One or two characteristic features are worth note. The genius of Aeschylus was very bold; it was a daring thing to bring up a ghost from the dead, for the supernatural appeal does not succeed except when it is treated with proper insight; yet even Aeschylus' genius has not quite succeeded in filling his canvas, the last scenes being distinctly poor in comparison with the splendour of the main theme. On the other hand a notable advance in dramatic power has been made. The main actors are becoming human; their wills are beginning to operate. Tragedy is based on a conflict of some sort; here the wilful spirit of youth is portrayed as defying the forces of justice and righteousness; it is insolence which brings Xerxes to ruin. The substantial creed of Aeschylus is contained in Darius' speech; as the poet progresses in dramatic cunning we shall find that he constantly finds his sources of tragic inspiration in the acts of the sinners who defy the will of the gods. _The Seven against Thebes_ was performed in 472. It was one of a trilogy, a series of three plays dealing with the misfortunes of Oedipus' race. After the death of Oedipus his sons Polyneices and Eteocles quarrelled for the sovereignty of Thebes. Polyneices, expelled and banished by his younger brother, assembled an army of chosen warriors to attack his native land. Eteocles opens the play with a speech which encourages the citizens to defend their town. A messenger hurries in telling how he left the besiegers casting lots to decide which of the seven gates of Thebes each should attack. Eteocles prays that the curse of his father may not destroy the town and leaves to arrange the defences. In his absence the Chorus of virgins sing a wild prayer to the gods to save them. Hearing this, the King returns to administer a vigorous reproof; he declares that their frenzied supplications fill the city with terrors, discouraging the fighting men. He demands from them obedience, the mother of salvation; if at last they are to perish, they cannot escape the inevitable. His masterful spirit at last cows them into a better frame of mind; this scene presents to us one of the most manly characters in Aeschylus' work.