Talk sense to a fool and he calls you foolish.

There are two kinds of fools. One says, "This is old, and therefore good." And one says, " This is new, and therefore better.

There are no foolish questions and no man becomes a fool until he has stopped asking questions.

Man's most valuable trait Is a judicious sense of what not to believe

Better a witty fool than a foolish wit.

And, beginning to grind his teeth again, Pyotr Petrovich admitted that he'd been a fool--but only to himself, of course.