It is not from the benevolence of the butcher， the brewer， or the baker that we expect our dinner， but from their regard to their own interest.

The spirit of envy can destroy; it can never build.

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.

Courage is grace under pressure.

无论是赏心悦目的事物，还是实实在在的东西，我们从中获取幸福的关键似乎取决于这样一个事实，那就是我们必须首先满足自己情感或心理上的一些更为重要的需求，诸如对理解、爱、宣泄和尊重的需求。《旅行的艺术》

世界上到处都是告诉你你不能做什么的人。你不需要他们。你已经知道自己不能做什么。你需要的是有人告诉你你能做什么。

如果你想走得快，独自前行；如果你想走得远，结伴同行。

The greatest experiments start with a simple question.

什么人背后不被人说，又有谁在别人面前不去议论人呢？