多项式时间归约的概念对于理解NP完全问题的结构至关重要。
The concept of polynomial-time reduction is central to understanding the structure of NP-complete problems.
A statement is a means to convey information， a promise is a means to make a commitment.
The only person you should try to be better than is the person you were yesterday.
真正的领导力不在于掌控，而在于关心那些你负责的人。
音乐是最强大的魔法形式。
21世纪最激动人心的突破将不是因为技术，而是因为人类概念的扩展。
幸福生活的关键不在于避免问题，而在于学会如何有效地处理它们。