
People are kept up at night by different things. Some people spend time in bed tossing and turning, unable to cope with the sheer horror of man's inhumanity to man. Some people are driven to greatness by a creative drive that forces them to stay awake, writing wonderful music or discovering amazing mathematical theorums (which are usually not quite short enough to write in the margins of books) or figuring out the secrets of life, the universe and everything.