The peculiar evil of silencing the expression of an opinion is that it is robbing the human race； posterity as well as the existing generation； those who dissent from the opinion， still more than those who hold it.

It is not a very fragrant world, but it is the world you live in.

The computer is incredibly fast, accurate, and stupid. Man is unbelievably slow, inaccurate, and brilliant. Together they are powerful beyond imagination.

All I know is that I don't know nothing.

教育不仅仅是建造学校，而是确保孩子们真正学到知识。

The world is a place of the living, and the dead have no place in it. The dead are nothing. They are not even a memory.

生活的最好方式是热爱你所做的事。