The elegance of a proof is as important as its correctness.
当统计显示百分之九十五的年青人创业失败,这不应该使人气馁。带着“沉没或游”(破釜沈舟)的精神去闯,一个人就不会沉没。
发散级数是魔鬼的发明,基于它们的任何证明都是一种耻辱。
The best feeling is when you know you've done everything right and the car is just perfect.