译文：用镜子照自己，可以看见形体容貌，用心性照自己，可以遇见祸福吉凶。赏析：为人处世，我们要多思考自己的言行是否得当，多想想自己的举止是否会得罪他人。凡事都要反躬自省，以免招致祸患。

数学的美在于它是永恒的，它不会改变。

乔治·华盛顿是奴隶主对吧？那华盛顿的地位因此受损了吗？那我们是不是还得拆除华盛顿的雕像啊？

The light of reason is different from the light of nature.

And the thing about a successful life is that a lot of the time, our ideas of what it would mean to live successfully are not our own. They're sucked in from other people; chiefly, if you're a man, your father, and if you're a woman, your mother. Psychoanalysis has been drumming home this message for about 80 years. No one's quite listening hard enough, but I very much believe it's true.

自由并非存在于对自然法则的梦幻般的独立之中，而是存在于对这些法则的认知中，以及由此产生的有系统地使它们朝着明确目标发展的可能性中。

The greatest rewards come from working on something that nobody else is working on.

一本书就是你手中握着的梦想。