Never let success get to your head, and never let failure get to your heart.
The concept of polynomial-time reduction is central to understanding the structure of NP-complete problems.
Lisp语言被设计成可扩展的,很容易为其添加新功能。
我们花了很多时间教领导者该做什么,却没有花足够的时间教他们该停止什么。