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

"For me, I am driven by two main philosophies: know more today about the world than I knew yesterday and lessen the suffering of others. You'd be surprised how far you can get with those two."

"I'm not saying I'm a genius. I'm just saying I have a lot of questions."

"The great thing about science is that it's a self-correcting enterprise. It doesn't care about your feelings."

"If you want to know what it means to be alive, look at the stars."