语出西汉·桓宽《盐铁论·疾贪》。表：古代测量日影以计时的标杆。要想让影子正，就要先将标杆树直；要想让下面的人清廉，就要先自己做到清廉。说明上位是下位的表率。

The primary rules of obligation are those that require or forbid certain actions.

"Sometimes the hardest journeys are the ones that take you back to yourself."

数学不是关于数字、方程、计算或算法的：它是关于理解的。

I'm not afraid to take an idea to the extreme.

我不是商人，我就是生意本身。

Literature is the most effective weapon against fanaticism.