Marshall, Keynes, and Macroeconomics
b"Marshall's notion of the representative firm can be read as a macro notion with some resemblance to Keynes' aggregative concepts. Keynes' notions of aggregate demand and aggregate supply are fashioned after Marshall's definitions of demand and supply. Keynes starts with the Marshallian equilibrium notion. The main innovation of Keynes--a conception of macroeconomic analysis as distinct from microeconomic analysis--may be understood as a particular application of Marshall's moving equilibrium method."