If you don’t make mistakes, you’re not working on hard enough problems.

要理解宇宙，你必须理解它所用的语言，那就是数学。

Happiness in marriage is entirely a matter of chance.

The world is a beautiful book, but of little use to him who cannot read it.

Art is the lie that tells the truth.

伟大的事情都很简单。而且大多数都可以被凝结成一个简单的单词：自由；公正；荣誉；责任；仁慈；希望。

唯一能阻止我的人就是我自己。

最大的爱国主义是当你的国家行为不光彩、愚蠢、恶毒时告诉它。