所有没有杀掉我的就只会令我更顽强！

A mathematician is a person who can find analogies between theorems; a better mathematician is one who can see analogies between proofs and the best mathematician can notice analogies between theories.

The only way to do great work is to love what you do.

One must not cheat anyone, not even the world of its triumph.

The world is so unpredictable. Things happen suddenly, unexpectedly. We want to feel we are in control of our own existence.