John Bates Clark (1847-1938) made important contributions to the economic debate of his time. In The Distribution of Wealth: A Theory of Wages, Interest and Profits, he developed the "marginal productivity" concept and the "product exhaustion" thesis behind the Marginal Productivity Theory of Distribution, which he was the first to develop in 1889, from which he then extrapolated enormous ethical conclusions. Clark believed that this theory was not...