数学的进步归功于那些不是被应用的欲望驱动，而是被发现的喜悦驱动的人。

"The essence of mathematics lies in its freedom."

On morals: "The one thing that offends me the most is when I walk by a bank and see ads trying to convince people to take out second mortgages on their home so they can go on vacation. That's approaching evil."

没有必要接受你所知道的生活强加给你的选择。

最深刻的真理往往是我们忽略的那些。