"I don't believe in anything, but I have a lot of fun."

"I don't think there's any such thing as a 'best' way to do anything. There's just what works."

"I would rather have a world with five billion people that are happy and healthy and well-fed and full of wonderful things than a world with twenty billion people who are starving and miserable."

"The thing that I cannot understand is what I cannot create. And I can't create a universe. So I don't understand the universe."

"The thing about science is that it's all about trying to prove yourself wrong."