Suppose four-fifths of all the money in Britain to be annihilated in one night, and the nation reduced to the same condition, with regard to specie, as in the reigns of the Harrys and Edwards, what would be the consequence? Must not the price of all labour and commodities sink in proportion, and everything be sold as cheap as they were in those ages? What nation could then dispute with us in any foreign market, or pretend to navigate or to sell manufactures at the same price which to us would afford sufficient profit? In how little time, therefore, must this bring back the money which we had lost, and raise us to the level of all the neighbouring nations? where, after we have arrived, we immediately lose the advantage of the cheapness of labour and commodities, and the further flowing in of money is stopped by our fulness and repletion. Again, suppose that all the money of Britain were multiplied fivefold in a night, must not the contrary effect follow? Must not labour and commodities rise to such an exorbitant height that no neighbouring nations could afford to buy from us, while their commodities, on the other hand, became so cheap in comparison that, in spite of all the laws which could be formed, they would be run in upon us, and our money flow out till we come to a level with foreigners, and lose that great superiority of riches which had laid us under such disadvantages? Now, it is evident that the same causes which would correct these exorbitant inequalities, were they to happen miraculously, must prevent their happening in the common course of nature, and must for ever, in all the neighbouring nations, preserve money nearly proportionable to the art and industry of each nation. All water, wherever it communicates, remains always at a level. Ask naturalists the reason: they tell you that were it to be raised in any one place, the superior gravity of that part not being balanced, must depress it till it meets a counterpoise; and that the same cause which redresses the inequality when it happens must for ever prevent it without some violent external operation.​[17] Can one imagine that it had ever been possible, by any laws, or even by any art or industry, to have kept all the money in Spain which the galleons have brought from the Indies? or that all commodities could be sold in France for a tenth of the price which they would yield on the other side of the Pyrenees, without finding their way thither, and draining from that immense treasure? What other reason, indeed, is there why all nations at present gain in their trade with Spain and Portugal, but because it is impossible to heap up money, more than any fluid, beyond its proper level? The sovereigns of these countries have shown that they wanted not inclination to keep their gold and silver to themselves had it been in any degree practicable.