"[Quantum mechanics] describes nature as absurd from the point of view of common sense. And yet it fully agrees with experiment. So I hope you can accept nature as She is - absurd."
"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 you were trying to find out more about it because you're gonna get an answer to some deep philosophical question...you may be wrong! It may be that you can't get an answer to that particular question by finding out more about the character of nature. But my interest in science is to simply find out about the world."
"We are trying to prove ourselves wrong as quickly as possible, because only in that way can we find progress."
"You can know the name of a bird in all the languages of the world, but when you're finished, you'll know absolutely nothing whatever about the bird... So let's look at the bird and see what it's doing -- that's what counts."