真正的斗争不是在善与恶之间，而是在痛苦与快乐之间。

You’ve got to have models in your head. And you’ve got to array your experience—both vicarious and direct—on this latticework of models. You may have noticed students who just try to remember and pound back what is remembered. Well, they fail in school and in life. You’ve got to hang experience on a latticework of models in your mind.

你必须愿意去那些让你害怕的地方。

You play with the cards you're dealt...whatever that means.

The art of doing mathematics consists in finding that special case which contains all the germs of generality.

幸福存在于小事中。

To succeed， get other people to pay you； to become wealthy， help other people to succeed.