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

"The universe is expanding, and so should our minds."

"You know, the universe is a pretty big place. If it's just us, seems like an awful waste of space."

"I'm not saying I'm Batman. I'm just saying no one has ever seen me and Batman in the same room."

"I'm not a philosopher. I'm a scientist. I'm interested in what is, not what should be."