“Anything that is too stupid to be spoken is sung.”

“Don't do anything stupid.”

“In explaining any puzzling Washington phenomenon, always choose stupidity over conspiracy, incompetence over cunning. Anything else gives them too much credit.”

“Because of the self-confidence with which he had spoken, no one could tell whether what he said was very clever or very stupid.”

“Too many stupid people have it.”

“It's too bad that stupidity isn't painful.”

“Blessed are the forgetful; for they get over their stupidities, too.”

“Very often in everyday life one sees that by losing one's temper with someone who has already lost his, one does not gain anything but only sets out upon the path of stupidity. He who has enough self-control to stand firm at the moment when the other person is in a temper, wins in the end. It is not he who has spoken a hundred words aloud who has won; it is he who has perhaps spoken only one word.”

“People are too lazy and too stupid to think for themselves that we've got sitcoms with canned laughter that let's you know when to laugh if you're to stupid to know when the joke is.”

“I don't know anything!' Tim(Caleb) wailed.
He'd never spoken a truer word in his life.”