保卫国家政权，是那些君主和臣子等享受俸禄的人谋划的事；保卫整个天下，即使是地位低微的普通百姓也有责任参与。

The only way to have a friend is to be one.

You can't control how other people feel, but you can control how you react to them.

Diversity in thought and background is what drives creativity and innovation in any organization.

比起知识本身，我对能用知识做什么更感兴趣。