中心地的等级越高，其数量越少，影响范围越大。

书籍是最强大的魔法形式。

You are God, and your imagination is divine.

阅读是一种共情的行为。

The truth is, the science of Nature has been already too long made only a work of the brain and the fancy: It is now high time that it should return to the plainness and soundness of observations on material and obvious things.

在阈限阶段，共同体作为一种自发的、直接的和平等的人际关系出现。