Laughter made you live better and longer.
The earth laughs in flowers.
Laughter is the sun that drives winter from the human face.
Joy's smile is much closer to tears than laughter.
Her laughter was a shiny thing, like pewter flung high in the air.
Laugh now, cry later.
Man is the only animal that laughs and weeps; for he is the only animal that is struck with the difference between what things are, and what they ought to be.
The child's laughter is pure until he first laughs at a clown.
You gotta laugh because if you didn't you'd cry.
Laughter and tears are both responses to frustration and exhaustion. I myself prefer to laugh, since there is less cleaning up to do afterward.