Believe that life is worth living， and your belief will help create the fact.

我们不是在卖水，我们是在卖健康和生活品质。

Never stop learning—the moment you think you know everything is the moment you fall behind.

A good mathematician should be both rigorous and imaginative.

I'm not interested in telling my own story, but in telling the story of everyone.

千里之行，始于足下。