"It is the ability to take a joke, not make one, that proves you have a sense of humor."
"A joke is not a thing but a process, a trick you play on the listener's mind. You start him off toward a plausible goal, and then by a sudden twist you land him nowhere at all or just where he didn't expect to go."
"Dogs laugh, but they laugh with their tails."
"Humor is the instinct for taking pain playfully."
"Laughter is, after speech, the chief thing that holds society together."
"A smile is the universal welcome."