年轻人是可怕的，因为怎么能知道他的将来不如我们现在呢？但如果一个人到了四十、五十岁还默默无闻，他也就没有什么可怕的了。

Close the door. Write with no one looking over your shoulder. Don't try to figure out what other people want to hear from you; figure out what you have to say. It's the one and only thing you have to offer.

The most important thing is to find the right form for the right content.

I would go 0-30 before I would go 0-9. 0-9 means you beat yourself, you psyched yourself out of the game.

数学不是关于数字、方程、计算或算法的：它是关于理解的。