Of all the things a man may do, sleep probably contributes most to keeping him sane. It puts brackets about each day. If you do something foolish or painful today, you get irritated if somebody mentions it, today. If it happened yesterday, though, you can nod or chuckle, as the case may be. You've crossed through nothingness or dream to another island in Time.
My mind spun for a second before it drifted, and in that second I knew that of all pleasures a drink of cold water when you are thirsty, liquor when you are not, sex, a cigarette after many days without one there is none of them can compare with sleep. Sleep is best.
Sleep is perhaps the only among life's great pleasures which need not be of short duration.