"The greatest discovery is to find something you love to do and then figure out how to get paid for it."

"No offense to anyone, but if you're an adult and you're still believing in Santa Claus, I'm concerned for you."

"If you are scientifically literate, the world looks very different to you, and that difference, I think, is a difference for the better."

"I find that if you have a goal, that you're going to work toward it. And if you don't have a goal, you're going to wander around aimlessly."

"I'm not a fan of people who think they have all the answers. The universe is too vast and complex for anyone to have all the answers."