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

“If it is stupid but it works, it isn't stupid.
(a Shin'a'in saying)”

“You've got to have as many good times as bad, or it all becomes too painful and too much work.”

“If what you've done is stupid, but it works.. then it really isn't all that stupid.”

“The enemy isn't men, or women, it's bloody stupid people and no one has the right to be stupid.”

“Human: That's stupid. Isn't there grass on both sides?”

“Egotism is the anesthetic that dulls the pain of stupidity”

“When you're surrounded by stupidity, self-preservation isn't a sin.”

“Stupidity isn't punishable by death. If it was, there would be a hell of a population drop.”

“If that isn't typical male stupidity! If something doesn't work, kick it or swear at it!”