"The most important thing is to never stop questioning."
最重要的是永远不要停止提问。
We teach a subject not to produce little living libraries on that subject, but rather to get a student to think mathematically for himself.
历史不仅仅是关于过去；它是关于过去如何塑造未来。
Agriculture is the foundation of civilization, and we must treat it with the respect it deserves.
Calm is contagious.
Social progress requires the organic combination of individual freedom and social responsibility.
Every stroke of the brush carries the weight of history and the lightness of possibility.