世界是一个迷宫，我们都在试图找到出路。

The laws that forbid the carrying of arms are laws of such a nature. They disarm only those who are neither inclined nor determined to commit crimes.... Such laws make things worse for the assaulted and better for the assailants; they serve rather to encourage than to prevent homicides, for an unarmed man may be attacked with greater confidence than an armed man.

The world is full of stories, but it's the ones we choose to tell that define us.

Courage is not the absence of fear, but the triumph over it.

NP完全性的概念为理解问题的复杂性提供了一个强大的工具。