He was further handicapped by his choice of a subject.[547] The Theban legend is unsuitable for epic treatment for more reasons than one. In the first place the story is unpleasant from beginning to end. Horror accumulates on horror, crime on crime, and there are but three characters which evoke our sympathy, Oedipus, Jocasta, and Antigone. These characters play only subsidiary parts in the story of the expedition of the Seven against Thebes, round which the Theban epic turns. The central characters are almost of necessity the odious brothers Eteocles and Polynices: Oedipus appears only to curse his sons. Antigone and Jocasta come upon the scene only towards the close in a brief and futile attempt to reconcile the brothers. The deeds and deaths of the Argive chiefs may relieve the horror and at times excite our sympathy, but we cannot get away from the fact that the story is ultimately one of almost bestial fratricidal strife, darkened by the awful shadow of the woes of the house of Labdacus. The old Greek epic assigned great importance to the character of Amphiaraus[548] persuaded by his false wife, Eriphyla, to go forth on the enterprise that should be his doom; it has even been suggested that he formed the central character of the poem. If this suggestion be true--and its truth is exceedingly doubtful--we are confronted with what was in reality only a false shift, the diversion of the interest from the main issues of the story to a side issue. The _Iliad_ cannot be quoted in his defence; there we have an episode of a ten years' siege, which in itself possesses genuine unity and interest. But the Theban epic comprises the whole story of the expedition of the seven chieftains, and it is idle to make Amphiaraus the central figure. In any case the prominence given to the fortunes of the house of Labdacus by the great Greek dramatists, and the genius with which they brought out the genuinely dramatic issues of the legend, had made it impossible for after-comers to take any save the Labdacidae for the chief actors in their story. And so from Antimachus onward Polynices and Eteocles are the tragic figures of the epic.