优秀的公司赚取利润，伟大的公司赢得人心。

学习数学的最好方法就是去做数学。

The sun himself is weak when he first rises, and gathers strength and courage as the day gets on.

The longer I live, the more I am inclined to the belief that this earth is used by other planets as a lunatic asylum.

永远愿意学习，因为你停止学习的那一刻就是你停止成长的那一刻。