Penn Jillette said this quote

Love and respect all people. Hate and destroy all faith.

~ Penn Jillette

If every trace of any single religion were wiped out and nothing were passed on, it would never be created exactly that way again. There might be some other nonsense in its place, but not that exact nonsense. If all of science were wiped out, it would still be true and someone would find a way to figure it all out again.

~ Penn Jillette

It's not arrogant to say that you can't figure out the answers to the universe with your internal faith. It's not arrogant to know that there's no omniscient, omnipotent prime mover in the universe who loves you personally. It's not sad to feel that life and the love of your real friends and family is more than enough to make life worth living. Isn't it much sadder to feel that there is a more important love required than the love of the people who have chosen to spend their limited time with you?

~ Penn Jillette

Once you've condoned faith in general, you've condoned any crazy shit done because of faith.

~ Penn Jillette