The duty of the Government is to leave commerce to its own capital and credit as well as all other branches of business.
A good mathematician should be both rigorous and imaginative.
技术是这样一种诀窍，它安排世界，使我们不必去体验它。
No matter how good you get you can always get better, and that's the exciting part.
"Success is a lousy teacher. It seduces smart people into thinking they can't lose."