system of morality is that pride begets impiety, impiety produces an insolent habit of mind, which culminates in blindness; the fruit of this blindness is crime, breeding crime from sire to son. It is only when the righteous man appears, who performs an act of retributive justice, in obedience to divine mandates, and without the indulgence of any selfish passion, that the curse is stayed. Such is a crude sketch of the Æschylean theory of Nemesis, as set forth in the great trilogy. To Æschylus, the presentation of the moral law conceived by him is of even more importance than the exhibition of the characters of men controlled by it. This is not the case with Sophocles. He fixes our attention upon the #hamartia#, or error of the guilty man, interests us in the qualities by which he was betrayed into sin, and makes us feel that suffering is the inevitable consequence of arrogant or wilful acts. The weakness of the offender is more prominent in Sophocles than the vengeance of the outraged deity. Thus, although there is the sternest religious background to all the tragedies of Sophocles, our attention is always fixed upon the humanity of his heroes. The house of Labdacus is involved in hereditary guilt. Laius, despising an oracle, begets a son by Jocasta, and is slain by that son. Oedipus, in his youthful recklessness, careless of oracular warnings, kills his father and weds his mother. Jocasta, through her levity and impiety, is hurried into marriage with the murderer of her husband, who is also her own son. All this #authadia#, or headstrong wilfulness, is punished by the descent of a fearful plague on Thebes; and Oedipus, whose heat of temper and self-reliance are his only serious crime, is overpowered by the abyss of misery into which these faults have plunged his people and his family. The utter prostration of Oedipus--when his eyes have been opened to the tissue of horrors he has woven round himself, his mother, his nation, and his children--is the first step in his moral discipline. He abdicates in favor of the insolent Creon, and goes forth to wander, an abhorred and helpless blind man, on the face of the earth. When, at the conclusion of his pariah life, the citizens of Colonus refuse him harborage, he only cries: "My deeds were rather sufferings than crimes." His old heroic haughtiness and headstrong will are tempered to a noble abhorrence of all baseness, to a fiery indignation. He has been purged and lessoned to humility before the throne of Zeus. Therefore, in return for his self-annihilation, the gods at last receive him to their company, and constitute him a blessed dæmon in the place of his disgrace. It was the highest triumph of tragic art to exhibit that new phase in the character of Oedipus which marks the conclusion of the _Tyrannus_ and is sustained in the _Colonëus_. In both of these plays, Oedipus is the same man; but circumstances have so wrought upon his temper as to produce a great change.