The ideas of economists and political philosophers， both when they are right and when they are wrong， are more powerful than is commonly understood. Indeed the world is ruled by little else. Practical men， who believe themselves to be quite exempt from any intellectual influence， are usually the slaves of some defunct economist.

We are all haunted by something, whether we admit it or not.

数学和计算机科学之间的相互作用是创新的丰富源泉。

I always try to give my best, no matter the situation.