书籍是镜子:你只能从中看到你内心已有的东西。
"Books are mirrors: you only see in them what you already have inside you."
Only the dead have seen the end of war
I don't believe in retirement. I believe in continuing to work as long as you're able.
计算复杂性的研究不仅仅是关于解决问题,还在于理解可计算性的极限。