The only thing I know is that I don't know anything.

The challenge of modern cryptography is not just to protect information, but to do so in a way that is both efficient and scalable.

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.

The most valuable crop we can grow is trust—with our consumers, our communities, and our environment.

数学的本质在于其自由性。

The only thing that can bring you happiness is yourself.