The most important ability of a product manager is to turn yourself into a fool.

The strongest is never strong enough to be always the master， unless he transforms strength into right， and obedience into duty.

人们常只想到自己的需要，而没考虑自己的能力。王朔语录

每个圣人都有过去，每个罪人都有未来。

学习的最好方法就是教。