On The Principles of Political Economy, and Taxation

by David Ricardo

These I believe to be the only two causes which regulate the comparative value of money in the different countries of the world; for although taxation occasions a disturbance of the equilibrium of money, it does so by depriving the country in which it is imposed of some of the advantages attending skill, industry, and climate.

It has been my endeavour carefully to distinguish between a low value of money, and a high value of corn, or any other commodity with which money may be compared. These have been generally considered as meaning the same thing; but it is evident, that when corn rises from five to ten shillings a bushel, it may be owing either to a fall in the value of money, or to a rise in the value of corn. Thus we have seen, that from the necessity of having recourse successively to land of a worse and worse quality, in order to feed an increasing population, corn must rise in relative value to other things. If therefore money continue permanently of the same value, corn will exchange for more of such money, that is to say, it will rise in price. The same rise in the price of corn will be produced by such improvement of machinery in manufactures, as shall enable us to manufacture commodities with peculiar advantages: for the influx of money will be the consequence; it will fall in value, and therefore exchange for less corn. But the effects resulting from a high price of corn when produced by the rise in the value of corn, and when caused by a fall in the value of money, are totally different. In both cases the money price of wages will rise, but if it be in consequence of the fall in the value of money, not only wages and corn, but all other commodities will rise. If the manufacturer has more to pay for wages, he will receive more for his manufactured goods, and the rate of profits will remain unaffected. But when the rise in the price of corn is the effect of the difficulty of production, profits will fall; for the manufacturer will be obliged to pay more wages, and will not be enabled to remunerate himself by raising the price of his manufactured commodity.

Any improvement in the facility of working the mines, by which the precious metals may be produced with a less quantity of labour, will sink the value of money generally. It will then exchange for fewer commodities in all countries; but when any particular country excels in manufactures, so as to occasion an influx of money towards it, the value of money will be lower, and the prices of corn and labour will be relatively higher in that country, than in any other.

This higher value of money will not be indicated by the exchange; bills may continue to be negotiated at par, although the prices of corn and labour should be 10, 20, or 30 per cent. higher in one country than another. Under the circumstances supposed, such a difference of prices is the natural order of things, and the exchange can only be at par when a sufficient quantity of money is introduced into the country excelling in manufactures, so as to raise the price of its corn and labour. If foreign countries should prohibit the exportation of money, and could successfully enforce obedience to such a law, they might indeed prevent the rise in the prices of the corn and labour of the manufacturing country; for such rise can only take place after the influx of the precious metals, supposing paper money not to be used; but they could not prevent the exchange from being very unfavourable to them. If England were the manufacturing country, and it were possible to prevent the importation of money, the exchange with France, Holland, and Spain, might be 5, 10, or 20 per cent. against those countries.

Whenever the current of money is forcibly stopped, and when money is prevented from settling at its just level, there are no limits to the possible variations of the exchange. The effects are similar to those which follow, when a paper money, not exchangeable for specie at the will of the holder, is forced into circulation. Such a currency is necessarily confined to the country where it is issued: it cannot, when too abundant, diffuse itself generally amongst other countries. The level of circulation is destroyed, and the exchange will inevitably be unfavourable to the country where it is excessive in quantity: just so would be the effects of a metallic circulation, if by forcible means, by laws which could not be evaded, money should be detained in a country, when the stream of trade gave it an impetus towards other countries.

When each country has precisely the quantity of money which it ought to have, money will not indeed be of the same value in each, for with respect to many commodities it may differ 5, 10, or even 20 per cent., but the exchange will be at par. One hundred pounds in England, or the silver which is in 100l., will purchase a bill of 100l., or an equal quantity of silver in France, Spain, or Holland.

In speaking of the exchange and the comparative value of money in different countries, we must not in the least refer to the value of money estimated in commodities, in either country. The exchange is never ascertained by estimating the comparative value of money in corn, cloth, or any commodity whatever, but by estimating the value of the currency of one country, in the currency of another.

It may also be ascertained by comparing it with some standard common to both countries. If a bill on England for 100l. will purchase the same quantity of goods in France or Spain, that a bill on Hamburgh for the same sum will do, the exchange between Hamburgh and England is at par; but if a bill on England for 130l., will purchase no more than a bill on Hamburgh for 100l., the exchange is 30 per cent. against England.

In England 100l. may purchase a bill, or the right of receiving 101l. in Holland, 102l. in France, and 105l. in Spain. The exchange with England is, in that case, said to be 1 per cent. against Holland, 2 per cent. against France, and 5 per cent. against Spain. It indicates that the level of currency is higher than it should be in those countries, and the comparative value of their currencies, and that of England, would be immediately restored to par, by abstracting from theirs, or by adding to that of England.

Those who maintained that our currency was depreciated during the last ten years, when the exchange varied from 20 to 30 per cent. against this country, have never contended, as they have been accused of doing, that money could not be more valuable in one country than another, as compared with various commodities; but they did contend, that 130l. could not be detained in England, when it was of no more value, estimated in the money of Hamburgh, or of Holland, than 100l.