The best way to learn mathematics is to do mathematics.
三种激情,简单但无比强烈,支配着我的生活:对爱的渴望,对知识的追求,以及对人类苦难的无法忍受的怜悯。
You can tell more about a person by what he says about others than you can by what others say about him.  
The harder you work, the luckier you get.
所谓仁人,只要能做到自己想成功时先帮别人成功,自己想得到时先帮别人得到,就可以了。推己及人,可算实行仁的方法。
The only time success comes before work is in the dictionary.
人的生命是有限的,但为人民服务是无限的。