我不怕死,我怕不去尝试。
I'm not afraid to die, I'm afraid not to try.
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
只有一种真正的罪过,那就是说服自己次好的东西不仅仅是次好的。
Mathematics is not a spectator sport. You have to get involved.
The best thing to hold onto in life is each other.