Grief is a private thing. It takes as long as it takes.

数学的美在于它是永恒的，它不会改变。

The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.

除非把爱国主义从人类中剔除，否则世界永远不会安宁。

我不会因为人们说什么而改变我是谁或我做什么。

或许谁都还会有这些弱点，否则可真糟了，绝顶的聪慧也要招人嘲笑了。我一生都在研究该怎么样避免这些弱点。例如虚荣和傲慢就是属于这一类弱点。