都是出卖，卖给中原各国也可以，何必非要卖给越国呢？ 

释义：在富贵时，朋友无数；一旦遭遇困难，却无人帮助。

金钱是非常不可思议的东西。它和爱一样，是人类喜悦的最大来源。但是它也和死一样，是人类忧烦的最大来源。

有些无限比其他无限更大。

数学证明不仅仅是验证，而是一个揭示更深层次真理的故事。

To understand is to forgive, even when understanding is hardest to come by.

灵魂是心理生活的统一体。

The more determinedly I exist, as myself, within the conditions of the time, the more clearly I shall hear the language of the past, the nearer I shall feel the breath of the centuries.

We don’t do market research. We just make things we believe in.