"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."
"Philosophy of science is about as useful to scientists as ornithology is to birds."
"I believe that a scientist looking at nonscientific problems is just as dumb as the next guy."
"Science is what we have learned about how to keep from fooling ourselves."
"Physics isn't the most important thing. Love is."
"Science is like sex: sometimes something useful comes out, but that is not the reason we are doing it."