Laughter's the nearest we ever get, or should get, to sainthood. It's the state of grace that saves most of us from contempt.

Laughter is the closest thing to the grace of God

Blessed is he who has learned to laugh at himself, for he shall never cease to be entertained

If I can get you to laugh with me, you like me better, which makes you more open to my ideas. And if I can persuade you to laugh at the particular point I make, by laughing at it you acknowledge its truth.

Truth's sacred fort th' exploded laugh shall win, And coxcombs vanquish Berkeley with a grin.

All sunshine without a little rain makes a desert.