The Compatibility of Marxian and Keynesian Economics: A Critical Assessment of Two Interpretations of Marx

Abstract

This paper contrasts two converse interpretations of Marx which are assessed regarding their compatibility with Keynesian concepts of effective demand, independent investment and endogenous money. On the one hand, the orthodox interpretation abstracts from money and assumes the validity of Say's law. Effective demand does not play a role. It is drawn from Marx's treatment of the general law of capitalist accumulation and the law of the tendency for the rate of profit to fall. On the other hand, the monetary interpretation highly regards of demand, investment and money. Money is the trigger of a general glut as it allows for the separation of purchase and sale as a means of circulation. As a means of payment, money implies its endogenous creation through lending. It is laid out in Marx's treatment of the reproduction and circulation of the aggregate social capital, his analysis of money and credit and his rejection of Say's law.