A reader who quarrels with postulates, who dislikes Hamlet because he does not believe that there are ghosts or that people speak in pentameters, clearly has no business in literature. He cannot distinguish fiction from fact, and belongs in the same category as the people who send checks to radio stations for the relief of suffering heroines in soap operas.
Northrop FryeThe poet, however, uses these two crude, primitive, archaic forms of thought (simile and metaphor) in the most uninhibited way, because his job is not to describe nature, but to show you a world completely absorbed and possessed by the human mind.
Northrop FryeThe ups and downs of this cosmos may sometimes be acknowledged to be metaphorical ups and downs, but until about Newton's time most people took the "up" of heaven and the "down" of hell to be more or less descriptive.
Northrop Frye