The real moral test of a society is how it treats those who are at the dawn of life, the children; those who are in the twilight of life, the aged; and those who are in the shadow of life, the sick, the needy and the handicapped.

The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.

我们都是自己故事中的英雄。

永远不要停止学习，因为世界永远不会停止变化。

One cannot think well, love well, sleep well, if one has not dined well.

Lisp语言被设计成可扩展的，很容易为其添加新功能。