The beauty of a program is in its simplicity.

The best way to cheer yourself up is to try to cheer somebody else up.

It is one thing to show a man that he is in an error, and another to put him in possession of truth.

The best way to predict the future is to invent it.

不过是君主不把它［爱人利人］用在政事上,士大夫也不把它付诸行动罢了。

做我该做的事。