Destacado estudante e herdeiro oficial de Alfred Marshall, Pigou se converteu no líder do neoclassicismo em Cambridge, tendo sido o defensor da ortodoxia marshalliana no primeiro terço do século. Como conseqüência disto, se converteu no alvo preferido das críticas de seu colega John Maynard Keynes.
Pigou é considerado o fundador da Economia do Bem-estar e principal precursor do movimento ecologista, ao estabelecer a distinção entre custos marginais privados e sociais. Por isso advogou pela intervenção do Estado, mediante subsídios e impostos, para corrigir as falhas de mercado e internalizar as externalidades.
Obras de Arthur C. Pigou
Robert Browning as a Religious Teacher, 1901.
Tariffs, 1903.
"Monopoly and Consumers' Surplus", 1904, EJ
Industrial Peace, 1905.
Import Duties, 1906.
"Review of the Fifth Edition of Marshall's Principles of Economics", 1907, EJ
"Producers' and Consumers' Surplus", 1910, EJ.
Wealth and Welfare, 1912.
Unemployment, 1914.
"The Value of Money", 1917, QJE.
The Economics of Welfare, 1920.
"Empty Economic Boxes: A reply", 1922, EJ.
"Exchange Value of Legal Tender Money", 1922, Essays in Applied Economics
Essays in Applied Economics, 1923.
Industrial Fluctuations, 1927.
"The Law of Diminishing and Increasing Cost", 1927, EJ.
A Study in Public Finance, 1928
"An Analysis of Supply", 1928, EJ.
The Theory of Unemployment, 1933.
The Economics of Stationary States, 1935.
"Mr. J.M. Keynes's General Theory", 1936, Economica
"Real and Money Wage Rates in Relation to Unemployment", 1937, EJ.
"money Wages in Relation to Unemployment, 1938, EJ
Employment and Equilibrium, 1941.
"The Classical Stationary State", 1943, EJ.
Lapses from Full Employment, 1944.
"Economic Progress in a Stable Environment", 1947, Economica
The Veil of Money, 1949.
Keynes's General Theory: A retrospective view, 1951.
Essays in Economics, 1952.