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" "The means whereby this work of Nature is brought to its consummate issue are forces of Nature working under her Laws by the method of cause and effect. The principle, or "law," of causation is a metaphysical postulate; in the sense that such a fact as causation is unproved and unprovable. No man has ever observed a case of causation, as is a commonplace with the latterday psychologists.
Thorstein Bunde Veblen (30 July 1857 – 3 August 1929) was a Norwegian-American sociologist and economist and a leader of the Efficiency Movement, most famous for The Theory of the Leisure Class (1899).
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