Do not keep company with a fool for as we can see he is a two-legged beast. Like an unseen thorn he pierces the heart with his sharp words.

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

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

Every fool believes what his teachers tell him, and calls his credulity science or morality as confidently as his father called it divine revelation.

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.