The fund from which saving can be made, is the surplus of the produce of labour, after supplying the necessaries of life to all concerned in the production: (including those employed in replacing the materials, and keeping the fixed capital in repair.) More than this surplus cannot be saved under any circumstances. As much as this, though it never is saved, always might be. This surplus is the fund from which the enjoyments, as distinguished from the necessaries, of the producers are provided; it is the fund from which all are subsisted, who are not themselves engaged in production; and from which all additions are made to capital. It is the real net produce of the country. The phrase, net produce, is often taken in a more limited sense, to denote only the profits of the capitalist and the rent of the landlord, under the idea that nothing can be included in the net produce of capital, but what is returned to the owner of the capital after replacing his expenses. But this is too narrow an acceptation of the term. The capital of the employer forms the revenue of the labourers, and if this exceeds the necessaries of life, it gives them a surplus which they may either expend in enjoyments, or save. For every purpose for which there can be occasion to speak of the net produce of industry, this surplus ought to be included in it. When this is included, and not otherwise, the net produce of the country is the measure of its effective power; of what it can spare for any purposes of public utility, or private indulgence; the portion of its produce of which it can dispose at pleasure; which can be drawn upon to attain any ends, or gratify any wishes, either of the government or of individuals; which it can either spend for its satisfaction, or save for future advantage.
The amount of this fund, this net produce, this excess of production above the physical necessaries of the producers, is one of the elements that determine the amount of saving. The greater the produce of labour after supporting the labourers, the more there is which can be saved. The same thing also partly contributes to determine how much will be saved. A
