1,549 works, 150 years of economic thought. Each one summarized and searchable, with cited passages inside.
Marginal utility was discovered long before it was believed. Kauder's puzzle is the gap: French, Italian, and Swiss writers had utility and scarcity, Bernoulli its mathematics, Lloyd its marginal insight, yet British classical economics clung to objective labor and cost value. His boldest explanation is theological. The seventeenth- and eighteenth-century split was not ignorance but the antagonism of two moral worlds—Calvinist culture, which placed work at the center of social order and made labor value morally compelling, against an Aristotelian-Thomistic tradition that oriented economic life toward need, satisfaction, and the good life. For the nineteenth-century delay Kauder shifts ground, rejecting hedonism, neo-Kantian revival, and bourgeois apologetics alike: what blocked marginalism was the prestige of Ricardian value and the anti-theoretical climate of the historical school, until Menger, Jevons, and Walras wrote where theory still had standing.
Before 1870 the history of the theory of value shows rather strange features, not easily paralleled in the history of any other science.
Menger, Böhm-Bawerk, and Wieser shared marginal utility with Jevons and Walras, yet Kauder argues that Vienna gave the doctrine a shape found nowhere else. The distinguishing marks are not subjective value itself but philosophical realism and social ontology: an Aristotelian search for the essences behind economic appearances, a suspicion of equations and functional interdependence, and a genetic-causal method that unfolds complex phenomena from consumer valuation. Menger's rejection of Walras's mathematics becomes a symptom of this deeper conception of science. Kauder then reads the school's politics against its Habsburg setting: shaped by Aristotle, Aquinas, Josephinism, and Metternich's bureaucratic paternalism, all three admired competition without embracing Manchester liberalism, and Wieser drifted toward order, charity, and organized social power. Economic method, on this telling, carries an inherited philosophy of reality and society inside it.
For Menger and his followers the model is the photography of a reality behind the appearances of every day life.
The annotated books Menger left at his death—his own Grundsätze, his copy of Rau, his Mill—traveled to Tokyo, where they entered the library of Hitotsubashi University and preserved a Menger the published works conceal. From these marginalia Kauder reconstructs an Aristotelian realist rather than a Kantian, a theorist of rational freedom, and a social liberal far from Manchester dogma. The Rau notes of 1867 already reject labor value, assert individual and immeasurable value, and sketch imputation, dismantling the charge that Menger plagiarized Gossen, whom he read only later and rejected. Menger emerges as a critic of luxury and aristocratic idleness who treated poverty itself as a form of bondage, and whose unfinished program—reaching into capital, money, overproduction, and price—passed to Böhm-Bawerk, Wieser, Mises, and Hayek. The Nachlass, Kauder insists, bequeathed far more than a value theory.
Aber die Armen sind durch die Ungunst der Verhältnisse bedrückt, sie sind noch nicht vollständig frei, sie sind »halbe Sklaven, ihre Kette ist länger«.
English translation: “But the poor are oppressed by the adversity of circumstances; they are not yet fully free, they are "half-slaves, their chain is only longer.”
Value is not lodged in goods, in labor, or in cost—it is the significance of a marginal satisfaction within an ordered plan of wants. That claim anchors Kauder's sweeping history, first published in 1965, which recovers marginal utility as a long and uneven effort rather than a sudden revolution of the 1870s. Its prehistory runs from Aristotle's value-in-use through the scholastics, Galiani, Turgot, and Condillac, past Bernoulli's mathematics of risk to Gossen's neglected system of diminishing and equalized utility. Menger, Jevons, and Walras succeed less by class interest than by the internal breakdown of classical value theory—and Menger sharpens the doctrine into its purest causal form. The later Austrians—Böhm-Bawerk, Wieser, Mayer, Mises, Morgenstern—then extend it to cost, imputation, complementarity, and uncertainty, exposing as much as they resolve.
The architects of marginal utility took their building stones from philosophy, psychology, religion, mathematics, and morals.