"The universe is expanding. We are all expanding. Everything is expanding. What are you doing?"

"I don't believe in magic. I believe in science. And science is far more magical than anything magic could ever be."

"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."

"The universe is not just a bunch of stuff. It's a story, and we're all part of it."

"The greatest discovery in science is the discovery of ignorance."