John Stuart Mill,
Principles of Political Economy
“ In all the great branches of manufacturing industry the portion of the cost incurred in the manufacturing process bears in general a large proportion to that represented by the raw material, while the influence of industrial invention, in reducing this portion of the cost, is, as every one knows, great and unremitting in its action.” As has been said, “the two great cheapeners of production are division of labor and machinery, and the degree in which these admit of being applied to manufacture is mainly dependent upon the scale on which the manufacturing process is carried on. ”
