先爱自己，因为那是你要共度余生的人。

Perception is not determined simply by stimulus patterns; rather it is a dynamic searching for the best interpretation of the available data.

The world is a dark place, but there's light in it too. You just have to look for it.

NP中的每个问题都可以归约为可满足性问题，这是计算复杂性理论的基石。