Poetry arises from the desire to get beyond the finite and the historical - the human world of violence and difference - and to reach the transcendent or divine. You're moved to write a poem, you feel called upon to sing, because of that transcendent impulse. But as soon as you move from that impulse to the actual poem, the song of the infinite is compromised by the finitude of its terms. In a dream your verses can defeat time, your words can shake off the history of their usage, you can represent what can't be represented [....] but when you wake [...] you're back in the human world with its inflexible laws and logic. Thus the poet is a tragic figure. The poem is always a record of failure.