“But I don't quite understand, Father: is nobody your friend but the one that does something for you?”

“To be the father of growing daughters is to understand something of what Yeats evokes with his imperishable phrase 'terrible beauty.' Nothing can make one so happily exhilarated or so frightened: it's a solid lesson in the limitations of self to realize that your heart is running around inside someone else's body. It also makes me quite astonishingly calm at the thought of death: I know whom I would die to protect and I also understand that nobody but a lugubrious serf can possibly wish for a father who never goes away.”

“Friendship is something that gets harder to understand, every damn year of my life.Friendship is like a kind of algebra test that nobody passes. In my worst moods, I think the best you can say is that a friend is anyone you don't despise.”

“One of my big revelations was that nobody cares whether you write your novel or not. They want you to be happy. Your parents want you to have health insurance. Your friends want you to be a good friend. But everyone’s thinking about their own problems and nobody wakes up in the morning thinking, ‘Boy, I sure hope Sam finishes that chapter and gets one step closer to his dream of being a working writer.’ Nobody does that. If you want to write, it has to come from you. If you don’t want to write, that’s great. Go do something else. That was a very liberating moment for me.”

“Don't quit. It's very easy to quit during the first 10 years. Nobody cares whether you write or not, and it's very hard to write when nobody cares one way or the other. You can't get fired if you don't write, and most of the time you don't get rewarded if you do. But don't quit.”

“What I am going to tell you about is what we teach our physics students in the third or fourth year of graduate school... It is my task to convince you not to turn away because you don't understand it. You see my physics students don't understand it... That is because I don't understand it. Nobody does.”