成功不是终点，失败也并非致命，重要的是继续前进的勇气。
The concept of polynomial-time reduction is central to understanding the structure of NP-complete problems.
What a man can be, he must be. This need we call self-actualization.
"The truth is rarely pure and never simple."
技术最终要服务于人，而不是让人去适应技术。
真相会让你自由，但首先它会激怒你。
"The truth is not always beautiful, but the search for it is."