Though Mill does not seem, in Bk. I. chap, v., to regard increased plant, machinery, etc., as "savings," but rather as something for which "savings" may be exchanged,[160] the more usual economic view of "savings" embodies part of them in plant and raw material, etc., and considers the working up of these into finished goods as a "consumption." But though industrial usage speaks of cotton yarn, etc., being consumed when it is worked up, the same language is not held regarding machinery, nor would any business man admit that his "capital" was consumed by the wear and tear of machinery, and was periodically replaced by "saving." The wearing away of particular material embodiments of capital is automatically repaired by a process which is not saving in the industrial or the economic sense. No manufacturer regards the expenditure on maintenance of existing plant as "saving"; what he puts into additional plant alone does he reckon "savings." It would be well for economists to clearly recognise that this business aspect of capital and saving is also the consistent scientific aspect. "Saving" will then be seen to apply exclusively to such increased production of plant and productive goods as will afterwards yield an increased crop of consumptive goods, provided the community is willing to consume them. "Saving" is postponed consumption--_i.e._, the production of "future goods," plant, machinery, raw materials in their several stages, instead of commodities suitable for immediate consumption. § 9. There are, in fact, two distinct motives which induce individuals to continue to produce, one is the desire to consume, the other the desire to save--_i.e._, to postpone consumption. It is true that the latter may be said also to involve a desire to consume the results of the savings at some indefinitely future time, but the motive of their production at present is a desire to reduce the quantity of the present consumption of the community, and to increase the quantity of postponed consumption.