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.

After a choral ode a piece of intense tragic horror follows. The messenger tells the names of the champions who are to assault the gates. As he names them and the boastful or impious mottoes on their shields, the King names the Theban champions who are to quell their pride in the fear of the gods. Five of the insolent attackers are mentioned, then the only righteous one of the invading force, Amphiaraus the seer; he it was who rebuked the violence of Tydeus, the evil genius among the besiegers, and openly reviled Polyneices for attacking his own native land. He had prophesied his own death before the city, yet resolved to meet his fate nobly; on his shield alone was no device, for he wished to be, not to seem, a good man. The pathos of the impending ruin of a great character through evil associations is heightened by the terror of what follows. Only one gate remains without an assailant, the gate Eteocles is to defend; it is to be attacked by the King's own brother, Polyneices. Filled with horror, the Chorus begs him send another to that gate, for "there can be no old age to the pollution of kindred bloodshed". Recognising that his father's curse is working itself out, he departs to kill and be killed by his own brother, for "when the gods send evil none can avoid it".

In an interval the Chorus reflect on their King's impending doom. His father's curse strikes them with dread; Oedipus himself was born of a father Laius who, though warned thrice by Apollo that if he died without issue he would save his land, listened to the counsels of friends and in imprudence begat his own destroyer. Their song is interrupted by a messenger who announces that they have prospered at six gates, but at the seventh the two brothers have slain each other. This news inspires another song in which the joy of deliverance gradually yields to pity for an unhappy house, cursed and blighted, the glory of Oedipus serving but to make more acute the shame of his latter end and the triumph of the ruin he invoked on his sons. The agony of this scene is intensified by the entry of Ismene and Antigone, Oedipus' daughters, the latter mourning for Polyneices, the former for Eteocles. The climax is reached when a herald announces a decree made by the senate and people. Eteocles, their King who defended the land, was to be buried with all honours, but Polyneices was to lie unburied. Calmly and with great dignity Antigone informs the herald that if nobody else buries her brother, she will. A warning threat fails to move her. The play closes with a double note of terror at the doom of Polyneices and pity for the death of a brave King.

Further progress in dramatic art has been made in this play. One of the main sources of the pathos of human life is the operation of what seems to us to be mere blind chance. Just as the casual dropping of Desdemona's handkerchief gave Iago his opportunity, so the casual allotting of the seven gates brings the two brothers into conflict. But behind it was the working of an inherited curse; yet Aeschylus is careful to point out that the curse need never have existed at all but for the wilfulness of Laius; he was the origin of all the mischief, obstinately refusing to listen to a warning thrice given him by Apollo. Another secret of dramatic excellence has been discovered by the poet, that of contrast. Two brothers and two sisters are balanced in pairs against one another. The weaker sister Ismene laments the stronger brother, while the more unfortunate Polyneices is championed by the more firmly drawn sister. Equally admirable is the contrast between the righteous Amphiaraus and his godless companions. The character of each of these is a masterpiece. War, horror, kindred bloodshed, with a promise of further agonies to arise from Antigone's resolve are the elements which Aeschylus has fused together in this vivid play.

"There was war in Heaven" between the new gods and the old. The Prometheus Bound contains the story of the proud tyranny of Zeus, the latest ruler of the gods. Hephaestus, the god of fire, opens a conversation with Force and Violence who are pinning Prometheus with chains of adamant to the rocks of Caucasus. Hephaestus performs his task with reluctance and in pity for the victim, the deep-counselling son of right-minded Law. Yet the command of Zeus his master is urgent, overriding the claims of kindred blood. Force and Violence, full of hatred, hold down the god who has stolen fire, Hephaestus' right, and given it to men. They bid the Fire-God make the chains fast and drive the wedge through Prometheus' body. When the work is done they leave him with the taunt:

"Now steal the rights of the gods and give them to the creatures
of the day; what can mortals do to relieve thy agonies? The gods
wrongly call thee a far-seeing counsellor, who thyself lackest a
counsellor to save thee from thy present lot."

Abandoned of all, Prometheus breaks out into a wild appeal to earth, air, the myriad laughter of the sea, the founts and streams to witness his humiliation; but soon he reflects that he had foreseen his agony and must bear it as best he can, for the might of Necessity is not to be fought against. A sound of lightly moving pinions strikes his ears; sympathisers have come to visit him; they are the Chorus, the daughters of Ocean, who have heard the sound of the riveted chains and hurried forth in their winged car Awestruck, they come to see how Zeus is smiting down the mighty gods of old. It would be difficult to imagine a more natural and touching motive for the entry of a Chorus.

In the dialogue that follows the tragic appeal to pity is quickly blended with a different interest. By a superb stroke of art Aeschylus excites the audience to an intense curiosity. Though apparently subdued, Prometheus has the certainty of ultimate triumph over his foe; he alone has secret knowledge of something which will one day hurl Zeus from his throne; the time will come when the new president of Heaven will hurry to him in anxious desire for reconciliation; when ruin threatens him he will forsake his pride and beg Prometheus to save him. But no words will prevail on the sufferer till he is released from his bonds and receives ample satisfaction for his maltreatment. The Chorus bids him tell the whole history of the quarrel. To them he unfolds the story of Zeus' ingratitude. There was a discord among the older gods, some wishing to depose Cronos and make Zeus their King. Warned by his mother, Prometheus knew that only counsel could avail in the struggle, not violence. When he failed to persuade the Titans to use cunning, he joined Zeus who with his aid hurled his foes down to Tartarus. Securing the sovereignty, Zeus distributed honours to his supporters, but was anxious to wipe out the human race and create a new stock. Prometheus resisted him, giving mortals fire the creator of many arts and ridding them of the dread of death. This act brought him into conflict with Zeus. He invites the Chorus to step down from their car and hear the rest of his story. At this point Ocean enters, one of the older gods. He offers to act as a mediator with Zeus, but Prometheus warns him to keep out of the conflict; he has witnessed the sorrows of Atlas, his own brother, and of Typhos, pinned down under Etna, and desires to bring trouble upon no other god; he must bear his agonies alone till the time of deliverance is ripe. Ocean departing, Prometheus continues his story. He gave men writing and knowledge of astronomy, taught them to tame the wild beasts, invented the ship, created medicine, divination and metallurgy. Yet for all this, his art is weaker far than Necessity, whereof the controllers are Fate and the unforgetting Furies. Terror-struck at his sufferings, the Chorus point out how utterly his goodness has been wasted in helping the race of mortals who cannot save him. He warns them that a time would come when Zeus should be no longer King; when they ask for more knowledge, he turns them to other thoughts, bidding them hide the secret as much as possible. Their interest is drawn away to another of Zeus' victims, who at this moment rushes on the scene; it is lo, cajoled and abandoned by Zeus, plagued and tormented by the dread unsleeping gadfly sent by Zeus' consort Hera. She relates her story to the wondering Chorus, and then Prometheus tells her the long tale of misery and wandering that await her as she passes from the Caucasus to Egypt, where she is promised deliverance from her tormentor.

The play now moves to its awful climax. The sight of Io stirs Prometheus to prophesy more clearly the end in store for Zeus. There would be born one to discover a terror far greater than the thunderbolt, and smite Zeus and his brother Poseidon into utter slavery. On hearing this Zeus sends from heaven his messenger Hermes to demand fuller knowledge of this new monarch. Disdaining his threats, Prometheus mocks the new gods and defies their ruler to do his worst. Hermes then delivers his warning. Prometheus would be overwhelmed with the terrors of thunder and lightning, while the red eagle would tear out his heart unceasingly till one should arise to inherit his agonies, descending to the depths of Tartarus. He advises the Chorus to depart from the rebel, lest they too should share in the vengeance. They remain faithful to Prometheus, ready to suffer with him; then descend the thunderings and lightnings, the mountains rock, the winds roar, and the sky is confounded with sea; the dread agony has begun.

Once more the bold originality of Aeschylus displays itself. Here is a theme unique in Greek literature. The strife between the two races of gods opens out a vista of the world ages before man was created. It will provide a solution to a very difficult problem which will confront us in a later play. The conflict between two stubborn wills is the source of a sublime tragedy in which our sympathies are with the sufferer; Zeus, who punishes Prometheus for "unjustly" helping mortals, himself falls below the level of human morality; he is tyrannous, ungrateful and revengeful—in short, he displays all the wrong-headedness of a new ruler. No doubt in the sequel these defects would have disappeared; experience would have induced a kindlier temper and the sense of an impending doom would have made it essential for him to relent in order to learn the great secret about his successor.