More quotes by Richard Feynman

"I believe that a scientist looking at nonscientific problems is just as dumb as the next guy."
"Religion is a culture of faith; science is a culture of doubt."
"Science is like sex: sometimes something useful comes out, but that is not the reason we are doing it."
"Science is what we have learned about how to keep from fooling ourselves."
"Physics is like sex: sure, it may give some practical results, but that's not why we do it."