"I was scared because of this same thing I was talking about — I'm not so good at this. “The Dean's tea” — it sounded so silly, you know, and high class."

"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…"

"I'm not interested in science for the sake of science. I'm interested in science for the sake of understanding the world."

"What do you care what other people think?"

"To guess what to do, you can't be a scientist unless you have a feel for the numbers."