事物的那一面存在着一种是与非，这一面同样也存在着另一种是与非。

保持渴望，保持愚钝，但最重要的是保持谦逊。

没有剑的契约只是空话，根本无法保护一个人。

每个数学问题都有解答；挑战在于找到它。

The growth of knowledge is the key to solving problems.

Choose always the way that seems the best, however it may be; custom will soon render it easy and agreeable.

A mathematician is a person who can find analogies between theorems; a better mathematician is one who can see analogies between theories and the best mathematician can notice analogies between analogies.

Treat your team like family, and they'll build a business that lasts generations.

Life is 10% what happens to us and 90% how we react to it.