Everyone is a moon, and has a dark side which he never shows to anybody.

The key to solving complex problems is often to find the right abstraction that simplifies the problem without losing its essential features.

不了解敌情，不可以行军打仗，不熟悉洋人的情况，不可以远谋。

年轻时，你以为会有很多人能与你产生共鸣。后来你才意识到，这种情况一生只会发生几次。