“Any evolutionary science… is a close-knit body of theory. It is a theory of a process, of an unfolding sequence… of cumulative causation. The great deserts of the evolutionist leaders… lie… in their having shown how this colorless impersonal sequence of cause and effect can be made use of for theory proper, by virtue of its cumulative character.”

—  Thorstein Veblen

Source: "Why is economics not an evolutionary science?", 1898, pp. 375-378; As cited in: Geoffrey M. Hodgson, "Veblen and darwinism." International review of sociology 14.3 (2004): 343-361

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Thorstein Veblen 41
American academic 1857–1929

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