Merely to announce to us that uncommon fate is scarcely horrible, because it is improbable. But if its necessity is demonstrated to us in the framework of everyday life, society, state, familiar emotion, then the horror is hallowed. In that revolt that shakes man and makes him say: “That is not possible,” there is an element of desperate certainty that “that” can be. This is the whole secret of Greek tragedy, or at least of one of its aspects.