人类的状况是永远的不满足；我们总是在寻找更多的东西。

The challenge in computational learning theory is to understand the capabilities and limitations of learning algorithms.

It is not the nature of magic to be either good or evil, but it is the nature of those who use it.

I don't need validation from anyone else.

一个人的力量有时可能超过千百人的力量，君子之人不能没有这种戒心；我何必怕他，大丈夫不能没有这种志向。

煤矿工人是美国工业实力的无名英雄。