“I firmly believe in the metaphysical experience of staying up all night every once in a while in an academic capacity.  It is nothing like staying up all night to go to a party, or to go to a party after going to a party, which I have done before….  The night is much shorter, paradoxically, than if you were doing it voluntarily.  First it is one o’clock, as it frequently is, and then it is three-thirty and finally, much later, it is five and then suddenly it is ten minutes past seven and all the other people are beginning to crawl out of bed having slept all night, a fact which you scorn, and are looking simply terrible,—much worse than you, and you have the feeling that life has been passing them by whereas you, YOU know the value and meaning of everything.  Knowing how long the night is, exactly, and how much can be accomplished in that time, and what time the sun comes up in the latter part of May, is a little bit like knowing how long life is.”     MS letter