皮古与福利经济学“福利经济学”(1920年)是皮古最主要的著作。这本书第一次为经济政策这门科学提供了一个完整的理论体系。经典经济学代表著作只用很少篇幅来讨论经济机构的纯理论在实际中的应用问题,这部分是在最后分析自由放任经济体系应在哪些方面受到限制时谈到的。席几威克在他的《政治经济学原理》中比他同时代的人更多地注意到这个问题;他把个人利益同社会利益存在着分 Pigou and welfare economics “welfare economics” (1920) is the most important works of Pigou. For the first time, this book provides a complete theoretical system for the science of economic policy. Classical economics represents only a few articles on the practical application of the pure theory of economic institutions. This part is finally analyzed when the system of laissez-faire government should be limited. Xi Weiqi in his “Principles of Political Economy” more than his contemporaries pay more attention to this issue; he personal interests and social interests exist points