The early works of Keynes help formulate the problems of labor and of wartime reparations, such that the government deficit spending approach to offsetting the boom and bust business cycles, so common in the late 19th century, can be clearly formulated. These texts by Keynes are an answer to the Austrian school and the Adam Smith formulation that the laws of supply and demand are unaffected by government intervention. It's not a return to Mercantilism where countries war with each other over prices and supply, but quite the opposite, a recognition that global economy affects all nations. Nations that lose in war may serve their next attack through economic collapse. Must have for the economic library. ( )