Great leaders are willing to make the tough decisions that others avoid.

With a library you are free, not confined by temporary political climates. It is the most democratic of institutions because no one - but no one at all - can tell you what to read and when and how.

Our wisdom comes from our experience， and our experience comes from our foolishness.

我从不猜测。在拥有数据之前进行理论化是一个重大错误。不知不觉中，人们开始扭曲事实以适应理论，而不是调整理论以适应事实。

That's exhilarating if you're doing well, and very crushing if you're not. It leads, in the worst cases -- in the analysis of a sociologist like Emil Durkheim -- it leads to increased rates of suicide. There are more suicides in developed, individualistic countries than in any other part of the world. And some of the reason for that is that people take what happens to them extremely personally -- they own their success, but they also own their failure.

写作的艺术就是发现你所相信的艺术。