Marx's theory of money and monetary production economy

Most classical and neoclassical economists have treated money as being neutral in the sense that it has no effect on the motives and decisions of economic agents. In the real world, however, money affects the behaviors of agents through many channels. An alternative framework is required to analyze the monetary production economy characterized by the 'money-commodity-more money' circuit aimed at realizing monetary profits. This paper examines Marx's theory of money in view of Keynes's taxonomy of economic systems to show that a specific use-value of money is the key to understanding the monetary production economy.