"In war, there are no winners, only survivors."

I will hazard a prediction. When you are 80 years old， and in a quiet moment of reflection narrating for only yourself the most personal version of your life story， the telling that will be most compact and meaningful will be the series of choices you have made. In the end， we are our choices. Build yourself a great story.

局部和全局现象之间的相互作用是数论中反复出现的主题。

平静来自内心。不要向外寻求。