"Racism, pollution and the rest of it are themselves very close to extinction."

"God is a verb."

"When I'm working on a problem, I never think about beauty. I think only how to solve the problem. But when I have finished, if the solution is not beautiful, I know it is wrong."

"Either war is obsolete or men are."

"Humanity is acquiring all the right technology for all the wrong reasons."

"Dare to be naive."

"What happens if a big asteroid hits Earth ? Judging from realistic simulations involving a sledge hammer and a common laboratory frog, we can assume it will be pretty bad."

"One that would have the fruit must climb the tree."

"Humility is the embarrassment you feel when you tell people how wonderful you are."

"To achieve great things we must live as though we were never going to die."

"An ounce of patience is worth a pound of brains."

"Each person must live their life as a model for others."