…but to the point which they illustrate. Let me give a few examples of good metaphors. For example, there's the metaphor in Macbeth about sleep, where he says, sleep that knits up the raveled sleeve of thought. Well, here you see the metaphor is the…

…small piece of poetry. But I would certainly say that this perfection is of a lower order than the perfection of, say, Macbeth or Hamlet, which combines an immense mass of material into an artistically satisfying whole. And I would say that, for example,…

…amount of health and sanity which we are always undermining by our conscious activities. As Shakespeare put it in Macbeth, this wonderful passage about sleep, Shakespeare incidentally has many extraordinary passages about sleep. He says, sleep that knits up…