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

Every time I write a book, every time I face that blank page, I’m convinced that I can’t do it.

任正非内部讲话稿

勇敢就是无条件地爱一个人，不期待任何回报。

孔子说：“人没有长远的考虑，必定有眼前的忧愁。”

自动机和形式语言的研究对于理解计算的极限是基础性的。