But when methods can be fallen upon to increase money according to the uses found for it, taxes will continue to produce, consumption will not diminish, and circulation will keep pace with them.
Could we suppose, that before the imposition of taxes, every person in a state had laid it down as a rule, to spend the whole of his income, but none of his treasure, in the consumption of what is brought to market, it is plain, that in a luxurious nation, taxes might be carried so high as to draw the last farthing of the treasure into circulation, even though it were supposed to exceed the value which demand had fixed for all that was brought to market. But without a luxurious turn this would not be the case. There are countries abounding with coin, which it is impossible to come at by proportional taxes. The reason is plain: the value which demand fixes upon the total of the articles of consumption exposed to sale in the country, bears but a trifling proportion to the coin which remains locked up. This was the case in ancient Greece. In that case, proportional taxes can never exhaust the treasure; because were they to be made high upon articles of the first necessity, all the poor would starve; if upon articles of superfluity, demand would stop.
Proportional taxes, therefore, can only be raised in proportion to the desire of spending money; and as this desire depends upon the spirit of the people, so must the extent of taxes.
Let me now trace a little the progress of money brought into circulation by proportional taxes in a luxurious nation. I shall call the value, fixed by demand, for all that comes to market (Y). The sum levied in consequence of the alienation of it, or in other words, the sum of the proportional taxes (X). And the whole money of the country (Z). This premised, it will follow, from what has been said, that so soon as all the money of the country is brought into circulation, then (Z) will be exactly equal to the sum of (Y) and (X).
Let us next suppose the whole alienation to be made at once. Will not (Z) then immediately appear divided into (Y) and (X)? What then will become of those two sums which we suppose to enter into circulation at the same time? I answer, that (Y) will go entirely free to the industrious seller: that it is, or should be, nearly equal to the former value of what came to market before taxes were imposed: and that (X) is an additional sum drawn from the idle consumers, who live upon an income already made. But suppose (X) to be augmented, until it exceeds the quantity of money formerly superfluous for carrying on alienation: then I say, that either taxes will become proportionally less productive, or consumers must melt down the capital of their funds into paper money, to the amount of the deficiency of (X); and this will supply circulation with the additional sum required in consequence of the imposition of taxes.
Now, I think, it is a lucky circumstance, that the additional sum of taxes should be paid by those very people who are the best able to borrow it upon their funds.
Let us proceed to examine the progress of (Y) and (X) as they continue in circulation. (Y) is no sooner come into the hands of the industrious seller, but he has occasion to go to market: that moment I consider him as one of the rich; and the money which, at the time he sold, had acquired the denomination of (Y), now resumes that of (Z). When he comes to buy a commodity with what was formerly his (Y), there is immediately a part of it converted into a new (X), and the remainder keeps the denomination of (Y) in the hands of him from whom he buys. By this progress it is plain, that after a certain number of alienations, or transitions from hand to hand, the whole quantity (Y) will be converted into (X).
Experience shews this to be the fact; because the amount of taxes, in a short time, far exceeds the value of all the money of a country.
Let us next follow the progress of (X).
Upon the first alienation of any part of what comes to market for the consumption of the proprietors of (Z), a proportional part of (Z) is transformed into (X), and is carried into the public coffers. Were it there to be locked up, and not thrown back into circulation, it is plain, that in a short time the whole of (Z) would be converted into (X), and would be shut up in the exchequer.