"The past is never dead. It's not even past."

Pure mathematics is, in its way, the poetry of logical ideas.

大多数人在紧急的事情上花了太多的时间，在重要的事情上花的时间却不够多。

死并非生的对立面，而作为生的一部分永存。

The iron rule of nature is: you get what you reward for. If you want ants to come, you put sugar on the floor.