Never let anyone else define your worth. You are the only one who can decide your value.

Time travel is the most frustrating thing in the world. You can't change anything, and you can't stop anything from happening.

The truth is rarely pure and never simple.

A writer must be a witness to his or her time, must bear witness to the injustices and the sufferings of the world.

Those who keep learning will keep rising in life.

学习数学的最好方法就是做数学。

每一个词都承载着它的历史重量。

To solve a mathematical problem is to uncover a piece of the universal puzzle.

生命的意义在于经历，而不在于结果。

领导这件事是一个敏感的话题。很多领导者失败，因为他们没有足够的勇气去打破现状、振奋人心。在我的生涯中，我从没有这种担忧。

大自然是一本书，每一页都是一个新的篇章，每一章都是一个新的故事。