Ask not what your country can do for you --ask what you can do for your country.

You don’t have to be perfect. Just be yourself.

真正的创新发生在技术与需求的交汇处。

我们生活得越快，感受得越少。

以孩子们能理解的方式写一些困难的主题是很重要的。

A mathematician is a maker of patterns, like a painter or a poet.

没有比复仇更昂贵、更没用的事情了。