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

"It's not about what you know, it's about what you can prove."

"I don't believe in magic. I believe in physics."

"I don't have a problem with people believing in God. I have a problem with people who think they know what God wants."

"The problem with 'alternative medicine' is that once it's proven to work, it's just called medicine."