These brothers had entered into an agreement with each other to reign alternately for a year at a time; and Eteocles being the elder, got first possession of the throne. This prince refusing to abdicate at the expiration of the year, Polynices fled to Argos, where marrying Argia, the daughter of Adrastus, king of that country, he procured the assistance of his father-in-law, to enforce the engagement stipulated with his brother Eteocles. The Argives marched under the command of seven able generals, who were to attack separately the seven gates of Thebes. After much blood had been spilt without any effect, it was at last agreed between the two parties, that the brothers should determine the dispute by single combat. In the desperate engagement which ensued, they both fell; and being burnt together upon the funeral pile, it is said that their ashes separated, as if actuated by the implacable resentment which they had borne to each other.
If we except the Aeneid, this is the only Latin production extant which is epic in its form; and it likewise approaches nearest in merit to that celebrated poem, which Statius appears to have been ambitious of emulating. In unity and greatness of action, the Thebais corresponds to the laws of the Epopea; but the fable may be regarded as defective in some particulars, which, however, arise more from the nature of the subject, than from any fault of the poet. The distinction of the hero is not sufficiently prominent; and the poem possesses not those circumstances which are requisite towards interesting the reader’s affections in the issue of the contest. To this it may be added, that the unnatural complexion of the incestuous progeny diffuses a kind of gloom which obscures the splendour of thought, and restrains the sympathetic indulgence of fancy to some of the boldest excursions of the poet.