经济的历史在很大程度上是一个制度演化的故事。

心理学家必须描述，而非解释。

我饭吃但是如果不吃，对于饥饿是没有益处的。见到了贤能的人们而不去任用，这样对于衰弱的国家，也是没有益处的。

Let me explain. I think it would be very unusual for anyone here, or anyone watching, to be envious of the Queen of England. Even though she is much richer than any of you are, and she's got a very large house, the reason why we don't envy her is because she's too weird.

安全的关键是不信任任何人，包括你自己。