Laughter, da best medi-sin

Don't go gentle . . .

I am fascinated by the fact that human beings laugh; they are the only animals to do so. They are also the only ones who know they are going to die.

~Umberto Eco (in an interview by James Runcie, 1989)

And don't forget tears:

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 might have been.

~William Hazlitt