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。

You need to invent things and you need to get them to people. You need to commercialize those inventions. Obviously, the best way we’ve come up with doing that is through companies.

Mathematics is the most beautiful and most powerful creation of the human spirit.

顾客忠诚是赢得的，不是买来的。