The Doctrine of Polylogism

When carried to its ultimate logical consequences this attitude implies the doctrine of polylogism. Polylogism denies the uniformity of the logical structure of the human mind. Every social class, every nation, race, or period of history is equipped with a logic that differs from the logic of other classes, nations, races, or ages. Hence bourgeois economics differs from proletarian economics, German physics from the physics of other nations, Aryan mathematics from Semitic mathematics. There is no need to examine here the essentials of the various brands of polylogism.

--Ludwig von Mises, Theory and History: An Interpretation of Social and Economic Evolution, ed. Bettina Bien Greaves (Indianapolis: Liberty Fund, 2005), 21-22.