“Though a skilled mathematician, Alfred Marshall used mathematics sparingly. He saw that excessive reliance on this instrument might lead us astray in pursuit of intellectual toys, imaginary problems not conforming to the conditions of real life: and further, might distort our sense of proportion by causing us to neglect factors that could not easily be worked up in the mathematical machine.”

Arthur Cecil Pigou ed. (1925). Memorials of Alfred Marshall, New York: Augustus M. Kelley, 1966. p. 84

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Arthur Cecil Pigou8

British economist 1877–1959

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Arthur Cecil Pigou8

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