每一天都是新的机会。
Mathematics is the art of giving the same name to different things.
It is easier to change the specification to fit the program than vice versa.
Style is very personal. It has nothing to do with fashion. Fashion is over quickly. Style is forever.
The greatest theorems often start as simple conjectures, born out of intuition.
数学的进步不仅仅依靠个人的努力,而是通过几代人的集体工作。