每个人都很重要，或者没有人重要。

幸福不是相信我们不需要改变；而是意识到我们可以改变。

The Government of the United States is a definite Government, confined to specified objects. It is not like the state governments, whose powers are more general.

The only way to learn mathematics is to do mathematics.

我不是男孩，我是女孩。

这个世界的真正逻辑在于概率的计算。