I’m a great believer in solving hard problems by using a checklist. You need to get all the likely and unlikely answers before you; otherwise it’s easy to miss something important.

风险不仅仅是损失的概率，还包括结果的不确定性。

We are all prisoners of our own lives, but some are freer than others.

All men are immortal， but those who are not educated are immortal in a lower and less enviable sense.

现在你们不是国人的勇士，怎么能既学好学业又学好射箭呢？ 

最深刻的发现往往来自最简单的观察。