In mathematics, you don't understand things. You just get used to them.
在数学中,你并不理解事物。你只是习惯了它们。
You don’t build a business—you build people, and then people build the business.
所以,父母、老师、国君三者,都不能当作做事的法度。 
We are not born for ourselves alone.
最可持续的农场是年复一年保持盈利的农场。