"The most important thing is to stay optimistic."

数学之美不仅在于其抽象的优雅，还在于其建模和解决现实世界问题的深刻能力。

The only way to get through life is to laugh your way through it. You either have to laugh or cry. I prefer to laugh. Crying gives me a headache.

我不怕死，我只是不想在我死的时候在场。