The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.

世界上充满了故事，但那些留在我们心中的，是那些触及我们最深恐惧和渴望的故事。

The study of mathematics is like air or gravity – it’s everywhere, even if you don’t see it.

国与国之间是平等的，人与人之间也是平等的，在人格与尊严上是没有贵贱之分的，上天对所有人都是一视同仁的，人生而平等是上天赋予每个人的不可被侵犯的权利。

A mathematical proof is not just a verification but a story that reveals deeper truths.

历史学家的任务是让死者重生。

It is better to be a human being dissatisfied than a pig satisfied； better to be Socrates dissatisfied than a fool satisfied.

When someone tells you something is wrong， they’re usually right. When someone tells you how to fix it， they’re usually wrong.

I don’t like to be put in a box. I like to be free.