People are always blaming their circumstances for what they are. I don't believe in circumstances. The people who get on in this world are the people who get up and look for the circumstances they want, and, if they can't find them, make them.

仅仅知道如何使用工具是不够的；还必须了解它们何时适用。

如果名分不正理论上便讲不通，理论上讲不通，事情便办不成；……因此，君子给某种事物起名字时，就一定要在理论上讲得通，在实践上就一定能行得通。

我热爱大海。那是个思考的好地方。