"Although his nineteenth-century reputation depended only slightly upon his fame as an economist, his Principles of Political Economy... was one of the most influential texts of any time. As late as 1919 it was still being used at Oxford...Mill's single point of originality was the distinction between the laws of production and the laws of distribution...In contrast to Ricardo, Mill had read widely. In his... discussion of Russian, Prussian, English, and Austrian systems of , he cited Richard Jones... who has come to be regarded as a precursor to historical economics. On peasant proprietorship in Switzerland, North America, and elsewhere, his authority was Sismondi, a pioneer student of industrial fluctuations. He quoted... Tooke on the perils of inflation. He refuted Attwood, a leading member of the inflationist Birmingham currency school. Mill relied upon Babbage on division of labor, and Wakefield on colonization and the relative advantages of large and small landholdings. On , he employed John Rae's New Principles of Political Economy. Although the major influences remained Malthus, Smith, and Ricardo, the book gave abundant evidence of Mill's endeavor to keep up with the times. The effort extended to a sympathetic, though ultimately disapproving, association with socialism."