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.

Don‘t cry because it is over， smile because it happened。

Let him only see the thorns who has eyes to see the rose.

唯一安全的系统是关闭的，浇筑在混凝土块中，并密封在有武装警卫的铅衬房间中。

追求数学真理需要直觉和严谨。

每个演员都带来了独特的东西，我的工作就是利用这种独特性。