The sky is not the limit; it is the beginning.

The most important thing in mathematics is to ask the right questions.

交易市场就象上帝一样，帮助那些自助者。但是和上帝不同的是，交易市场不会原谅那些不知道自己在做什么的人。

The best editing is the kind that you don't notice; it's seamless and serves the story.

We teach a subject not to produce little living libraries on that subject, but rather to get a student to think mathematically for himself.