A fool's brain digests philosophy into folly, science into superstition, and art into pedantry. Hence University education.

It is better to remain silent and be thought a fool, than to open your mouth and remove all doubts.

I've never fooled anyone. I've let people fool themselves. They didn't bother to find out who and what I was. Instead they would invent a character for me. I wouldn't argue with them. They were obviously loving somebody I wasn't.

Never argue with a fool, onlookers may not be able to tell the difference.

I am a fool, but I know I'm a fool and that makes me smarter than you.

The tongue of a fool is the key of his counsel, which, in a wise man, wisdom hath in keeping.