In writing an Odyssey, he did not make the poem cover all that ever befell his hero it befell him, for instance, to get wounded on Parnassus and also to feign madness at the time of the call to arms, but the two incidents had no necessary or probable connexion with one another instead of doing that, he took as the subject of the Odyssey, as also of the Iliad, an action with a unity of the kind we are describing.