Never rely on the glory of the morning nor the smiles of your mother-in-law.
You don't stop laughing because you grow old. You grow old because you stop laughing.
The great art of giving consists in this: the gift should cost very little and yet be greatly coveted, so that it may be the more highly appreciated.
Computer Science is no more about computers than astronomy is about telescopes.
You should not live one way in private, another in public.
Get pleasure out of life...as much as you can. Nobody ever died from pleasure.
The problem with people who have no vices is that generally you can be pretty sure they're going to have some pretty annoying virtues.