Laugh and the world laughs with you.
Snore and you sleep alone.
The difference between an optimist and a pessimist? The optimist laughs to forget, the pessimist forgets to laugh.
You don’t stop laughing because you grow old. You grow old because you stop laughing.
There are three things that are real: God, human folly, and laughter. The first two are beyond our comprehension. So we must do what we can with the third.
–John F. Kennedy