I hope that in this year to come, you make mistakes. Because if you are making mistakes, then you are making new things, trying new things, learning, living, pushing yourself, changing yourself, changing your world. You're doing things you've never done before, and more importantly, you're doing something.

人一生不学习，一天闲过，一事无成，这是人生三件可惜事。

Happiness is not something ready-made. It comes from your own actions.

The essence of mathematics lies in its freedom.