The purpose of life is not to be happy. It is to be useful, to be honorable, to be compassionate, to have it make some difference that you have lived and lived well.

The ability to associate depends, in turn, on the degree to which communities share norms and values and are able to subordinate individual interests to those of larger groups.

April is the cruelest month, breeding lilacs out of the dead land, mixing memory and desire, stirring dull roots with spring rain.

外交并不是被动地适应变化，而是积极主动地塑造变化。

在科学中，最重要的品质是学术诚信。

The stream of consciousness is a stream of life-preserving acts.