Theory as distinct from history is the search for constant relations between entities or, what means the same, for regularity in the succession of events. In establishing epistemology as a theory of knowledge, the philosopher implicitly assumes or asserts that there is in the intellectual effort of man something that remains unchanged, the logical structure of the human mind, i.e., the human mind with its a priori categories. Ludwig von Mises - The Ultimate Foundation of Economic Science
January 02, 2026