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。

Abundance is not something we acquire. It is something we tune into.

The heart that loves， lives.

I guess it comes down to a simple choice:get busy living or get busy dying.

Leadership is about making tough decisions today that will shape a better tomorrow.

Faith is the great cop-out, the great excuse to evade the need to think and evaluate evidence.

我们所看到的改变了我们所知道的。我们所知道的改变了我们所看到的。

The fundamental point in fabricating a chain reacting machine is of course to see to it that each fission produces a certain number of neutrons and some of these neutrons will again produce fission.