如果没有经历寒冷的冬天，就不知道松柏的坚韧挺拔；没有经历过危难的事情，就不知道君子志向的远大。

The individual has always had to struggle to keep from being overwhelmed by the tribe.

"你越是试图理解真相，就越少知道。"

A mathematician is a device for turning coffee into theorems.

采购透明度不是一种趋势，而是消费者信任的基础。

数学是为不同事物赋予相同名称的艺术。

The great powers are always searching for opportunities to gain power at the expense of their rivals, and they will use force if they think it will profit them.