"If you're ever feeling small, just remember that you're made of stardust, and you're part of something much bigger than yourself."

"I'm not saying I'm a superhero, but I do have a cape. It's called a lab coat."

"If you want to understand the universe, you have to be willing to ask the tough questions."

"I think the universe is a lot weirder than we give it credit for."

"I'm just trying to get people to think about the universe in a different way."