There is then, sometimes in the heroines themselves and almost always in their environment, an element of barbarism which troubles us. The touch of savagery repels us all the more from its contrast with the exquisite poetry in which it is enshrined, and the noble spirit of that poetry. We wonder why the dramatist should have placed creatures so sensitive and highly wrought in situations which are so crudely appalling; and the incongruity is not shaken off until we remember the nature of the material upon which the poet is constrained to work. For the Attic dramatists went for the subjects of their poetry directly to stories out of the primitive past—old legends which, though sometimes very beautiful, nearly always contain elements of cruelty and horror. The reason why they did this is interesting, and explains some curious points about Greek Drama. To us it seems strange that these poets, whose ideas were probably as ‘advanced’ to their contemporaries as our modern Drama is to us, did not take their themes out of the vastly interesting and even momentous life of their own day. Very occasionally they did this, as we know from the drama of Æschylus called _The Persians_, which deals directly with that tremendous event of Greek history the Persian Invasion. But almost always, as we have said, they turned away from their own time, and looked back upon the ancient past for the subject-matter of Drama. It is probable that poetical motives influenced them to some extent—the same that made Milton turn back to the Hebrew story of the creation, and Tennyson occupy himself for nearly fifty years with the Arthurian legend. But there was another, and more compelling reason; and it lay in the religious character of the Attic theatre.