The Mercantilistic-Keynesian Employment Theory Embraced All Essential Features of Modern Effective Demand Analysis

However, we do not want to examine further the factual conditions under which the Mercantilistic-Keynesian employment theory is valid. What we want to show is that this theory embraced in fact all essential features of modern "Effective Demand Analysis." As far as I can see, the man who developed this analysis most conclusively is John Law who, although generally not counted among the Mercantilists proper, is undoubtedly to be considered the strongest and most interesting exponent of their ideas.
--L. Albert Hahn, "Mercantilism and Keynesianism," in The Economics of Illusion: A Critical Analysis of Contemporary Economic Theory and Policy (New York: Squier Publishing, 1949), 108.