人类是一种非常奇特的生物。他以为自己有一个灵魂，其实他有几十个。
The human being is a most curious creature. He thinks he has got one soul, and he has got dozens.
The difference between fiction and reality? Fiction has to make sense.
合作是关键，伟大的科学从来不是孤立完成的。
The process of mathematical discovery is as important as the discovery itself.
我们所要做的就是记住要勇敢。