"I'm often asked, 'What is the meaning of life?' I don't know, but I think that the search for meaning is a good meaning to have."

"I would say, if you're not failing, you're not trying hard enough."

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

"We don't have enough laws to stop stupid people from doing stupid things."

"You know, the universe is a pretty big place. It's much bigger than people realize. And sometimes, you just gotta look up."