The hard part is, of course, the proximity of death. The number has no meaning as long as you're fit and healthy. But you know that you only have so much time left and you don't know how much it is. It could be a very short time.
Philip RothTeaching ... particularly in the 1990s, teaching what is far and away the dumbest generation in American history, is the same as walking up Broadway in Manhattan talking to yourself, except instead of eighteen people who hear you in the street talking to yourself, they're all in the room. They know, like, nothing.
Philip Roth