Physics isn't the most important thing. Love is. - Richard Feynman

"Physics is like sex: sure, it may give some practical results, but that's not why we do it."

"Nobody ever figures out what life is all about, and it doesn't matter. Explore the world. Nearly everything is really interesting if you go into it deeply enough."

"Science is what we have learned about how to keep from fooling ourselves."

"The first principle is that you must not fool yourself and you are the easiest person to fool."

"If you thought that science was certain - well, that is just an error on your part."