"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 world is a stage, but the play is badly cast."

"I don't know anything, but I do know that everything is interesting if you look at it deeply enough."

"If I could explain it to the average person, I wouldn't have been worth the Nobel Prize."

"I'm not interested in being a guru. I'm interested in understanding the world."