I wanted to sell a million records, and I sold a million records. I wanted to go platinum; I went platinum. I’ve been working nonstop since I was 15. I don’t even know how to chill out.

Choose the best life； for custom will make it pleasant.

一个好老师必须能够设身处地为那些觉得学习困难的人着想。

You think your pain and your heartbreak are unprecedented in the history of the world, but then you read.

The loneliness of command is inevitable.

The pursuit of mathematical knowledge is a journey that never ends.

时间不是药，药在时间里。

数学是过去与现在之间的对话。