数学中发现的快乐是无与伦比的。

I'm the reason your present won't stay.

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

没有你爱的人分享，成功毫无意义。

不要哭泣；不要愤怒。去理解。

合作是解决世界上最紧迫问题的关键。