一个人的首要职责是为自己思考。

At the end of the day it's not about what you have or even what you've accomplished... it's about who you've lifted up, who you've made better. It's about what you've given back.

You may not realize it when it happens, but a kick in the teeth may be the best thing in the world for you.

教学应始终适应学生的发展阶段。

I never try to predict the market; I just try to be prepared for whatever it does.