最优财政政策的设计应旨在减轻时间不一致性和政治经济周期引起的扭曲。

In the end, we are all just stories, and it is up to us to make our stories worth telling.

The natural effort of every individual to better his own condition， when suffered to exert itself with freedom and security， is so powerful a principle that it is alone， and without any assistance， not only capable of carrying on the society to wealth and prosperity but of surmounting a hundred impertinent obstructions with which the folly of human laws too often encumbers its operations.