Mathematics is the art of giving the same name to different things.
To create is to engage with the world, not to escape from it.
译文：自由自在行走时，感受不到时光流逝，所到之处，都有蓑衣相伴，充满别样乐趣。
幸福不是现成的东西，它来自你自己的行动。
The truth is rarely pure and never simple.
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。