Keynes's Apostasy from Marshallian Economics Led to a Heretical Body of Economics Designed to Effect a Rapid Transition to the Millennium

Section 4 contains an account of Keynes's apostasy from Marshallian economics in consequence of the Great Depression and his endeavor, beginning in 1932, to formulate a heretical body of economic analysis and policy, which was designed to effect a rapid transition to the millennium. In the fifth and concluding section of the paper, I present the case that the basic building blocks of the General Theory, including the theories of effective demand and liquidity preference and the concept of the marginal efficiency of capital, are fashioned out of the Moorite ethical precepts that Keynes presumed would guide action in his imagined millennial state.

--Joseph T. Salerno, "The Development of Keynes's Economics: From Marshall to Millennialism," Review of Austrian Economics 6, no. 1 (1992): 6.