The purpose of a model is to be simple enough to understand and use, but complex enough to capture the essential features of the system.
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。
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.
生活的最好方式是无条件地爱。
如果你想让人做某事,就让它变得简单。