最成功的企业是那些将其目标与客户需求保持一致的企业。

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

"To live is the rarest thing in the world. Most people exist, that is all."

大多数人死在二十或三十岁，此后他们只是自己的影子。