模型的目的是足够简单以便理解和使用，但又足够复杂以捕捉系统的基本特征。

人类是极其多样化的。只从人的一个维度来看待他们，是一种狭隘和有限的心态。

The test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.

好的小说应该像一面镜子，照出人性的复杂和矛盾。

The poet must be a seer, make himself a seer.