不好的事情会经常发生。

要享受自由，我们必须控制自己。

True progress measures both economic growth and ecosystem health.

The most radical art is the one that exposes the mechanisms of control.

统计推断的理论不是数学的一个分支，而是在不确定性下进行推理的科学。

The knowledge that you have emerged wiser and stronger from setbacks means that you are, ever after, secure in your ability to survive. You will never truly know yourself, or the strength of your relationships, until both have been tested by adversity. Such knowledge is a true gift, for all that it is painfully won, and it has been worth more than any qualification I ever earned.

成功来自于解决实际问题，而不仅仅是追逐趋势。

一件事不一定是真的或假的；它可能既是真的又是假的。