Penn Jillette

I do believe that a belief in God is crazy, but that doesn't mean that the people who believe in it are crazy. Those are two different things. Ideas can stupid and crazy, and the people who hold those ideas are not necessarily stupid and crazy.

Michel de Montaigne

Man is quite insane. He wouldn’t know how to create a maggot, and he creates Gods by the dozen.

Charles Bukowski

Some people never go crazy. What truly horrible lives they must lead.

Albert Einstein

Insanity: doing the same thing over and over again and expecting different results.