Mathematics is an art, and as an artist, you have to be honest with yourself.
数学是一门艺术,作为艺术家,你必须对自己诚实。
Duty is the most sublime word in our language. Do your duty in all things. You cannot do more. You should never wish to do less.
依靠聪明、平衡的人类几个世纪以来所依赖的普通美德。常识、节俭、现实的期望、耐心和毅力。
Simplicity is not the goal. It is the by-product of a good idea.