"To lose one parent may be regarded as a misfortune; to lose both looks like carelessness."

把每一天当作生命的最后一天来活。

The concept of polynomial-time reduction is central to understanding the structure of NP-complete problems.

我们相信美国会做正确的事。当然,是在她尝尽其他一切可能之后。

Innovation is seeing what everybody has seen and thinking what nobody has thought.

Program testing can be used to show the presence of bugs, but never to show their absence!

The man who wants to lead the orchestra must turn his back on the crowd.