Page:Principles of Political Economy Vol 2.djvu/290



§ 1. changes which the progress of industry causes or presupposes in the circumstances of production, are necessarily attended with changes in the values of commodities.

The permanent values of all things which are neither under a natural nor under an artificial monopoly, depend, as we have seen, on their cost of production. But the increasing power which mankind are constantly acquiring over nature, increases more and more the efficiency of human exertion, or in other words, diminishes cost of production. All inventions by which a greater quantity of any commodity can be produced with the same labour, or the same quantity with less labour, or which abridge the process, so that the capital employed needs not be advanced for so long a time, lessen the cost of production of the commodity. As, however, value is relative; if inventions and improvements in production were made in all commodities, and all in the same degree, there would be no alteration in values. Things would continue to exchange for each other at the same rates as before; and mankind would obtain a greater quantity of all things in return for their labour and abstinence, without having that greater abundance measured and declared (as it is when it affects only one thing) by the diminished exchange value of the commodity.

As for prices, in these circumstances they would be affected or not, according as the improvements in production did or did not extend to the precious metals. If the materials of money were an exception to the general diminution of cost of production, the values of all other things would