The only thing of value is the thing you cannot buy.
A mathematician's work is never done; there are always new questions to explore and new mysteries to uncover.
轧棉机的发明纯属偶然；那时我还很年轻，非常贫穷，对我来说从中实现一些价值是一个重要的目标。
当你连接别人忽视的点时，突破就会发生。
Disciplining yourself to do what you know is right and important, although difficult, is the highroad to pride, self-esteem, and personal satisfaction.