规定福利经济学的范围这件事,几乎与给经济学本身下定义一样地为难。主题一定是存在的,因为人们写下许多关于它的书籍和文章,但是,什么包括、什么不包括在福利经济学之内,要在其间划一条界线,就不容易了。一端是几乎把引起原则问题或求诸判断标准的任何经济政策的讨论都包括在内,而另一端则把主题局限于对社会最适度条件的 The definition of the scope of welfare economics is almost as embarrassing as the definition of economics itself. There must be a theme because people write a lot of books and articles about it, but it is not easy to include anything that is not included in welfare economics and to draw a line between them. At one end, the discussion of almost any economic policy that caused the question of principle or the criterion of judgment was included, while the other side limited the theme to the most appropriate conditions for society