网球是一项心理游戏。每个人都很健康，每个人都能打出漂亮的正手和反手。

I like to tell a story and not explain it. I like to leave it open-ended.

The ultimate measure of a man is not where he stands in moments of comfort and convenience， but where he stands at times of challenge and controversy.

所谓顿悟，说明真理是不可分割的

思考就是将自己局限于一个单一的思想。