"Fall in love with some activity, and do it! Nobody ever figures out what life is all about, and it doesn't matter. Explore the world. Immediately pay attention to anything that grabs you, and then, wi…"

"I learned very early the difference between knowing the name of something and knowing something."

"I was very surprised that a lot of artists, when they found out I was a scientist, they would start telling me about their theories of the universe, and they were always crackpot theories."

"I have a friend who's an artist and has sometimes taken a view which I don't agree with. He'll hold up a flower and say, 'Look how beautiful it is,' and I'll agree. Then he says, 'You see, as a scient…"

"You have no responsibility to live up to what other people think you ought to accomplish. I have no responsibility to be like what they expect me to be. It's their mistake, not my failing."