"Loneliness is not lack of company, loneliness is lack of purpose."

The more absurd the world becomes, the more necessary it is to create a sense of order.

数学研究就是对模式的研究。

The more you learn, the more you know. The more you know, the more you forget. The more you forget, the less you know. So why bother to learn?

用度少，则金价低贱；金价贱，则事情难成。

伟大的企业建立在良好的人际关系之上。