"I'm not trying to be the smartest guy in the room. I'm just trying to be the guy who asks the right questions."

"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 problem with the world is that the intelligent people are full of doubts, while the stupid ones are full of confidence."

"I'm not a fan of people who say, 'I believe in science.' Science is not a belief system. Science is a method."

"I'm not trying to convince you of anything. I'm just trying to get you to think."