1,549 works, 150 years of economic thought. Each one summarized and searchable, with cited passages inside.
A system of simultaneous equations can establish that prices, quantities, and marginal utilities are mutually compatible; it cannot show how any determinate price came to be. That distinction, between genetic-causal theories, which explain how prices arise, and functional theories, which merely describe correspondences once equilibrium is presupposed, drives this methodological reckoning with mathematical economics. Marching through Cournot's demand function, Jevons's and Walras's equilibrium equations, Pareto's indifference curves, and Cassel's scarcity model, Mayer argues that each mistakes a description of finished relations for an account of their formation, and that Pareto's curves rest on the mere fiction of an experiment. Writing from interwar Vienna in the long shadow of the Methodenstreit, he does not spurn formalization but demands a return to causal inquiry into subjective valuation and its temporal sequence.
Das Problem hat sich damit geändert und nicht nur die Betrachtungsweise.
English translation: “The problem itself has thereby changed, and not merely the point of view.”