The Wealth of Nations_ Books 4-5 - Adam Smith [298]
If by such a system of administration smuggling, to any considerable extent, could be prevented even under pretty high duties, and if every duty was occasionally either heightened or lowered according as it was most likely, either the one way or the other, to afford the greatest revenue to the state, taxation being always employed as an instrument of revenue and never of monopoly, it seems not improbable that a revenue at least equal to the present net revenue of the customs might be drawn from duties upon the importation of only a few sorts of goods of the most general use and consumption, and that the duties of customs might thus be brought to the same degree of simplicity, certainty, and precision as those of excise. What the revenue at present loses by drawbacks upon the re-exportation of foreign goods which are afterwards relanded and consumed at home would under this system be saved altogether. If to this saving, which would alone be very considerable, were added the abolition of all bounties upon the exportation of home produce in all cases in which those bounties were not in reality drawbacks of some duties of excise which had before been advanced, it cannot well be doubted but that the net revenue of customs might, after an alteration of this kind, be fully equal to what it had ever been before.
If by such a change of system the public revenue suffered no loss, the trade and manufactures of the country would certainly gain a very considerable advantage. The trade in the commodities not taxed, by far the greatest number, would be perfectly free, and might be carried on to and from all parts of the world with every possible advantage. Among those commodities would be comprehended all the necessaries of life and all the materials of manufacture. So far as the free importation of the necessaries of life reduced their average money price in the home market it would reduce the money price of labour, but without reducing in any respect its real recompense. The value of money is in proportion to the quantity of the necessaries of life which it will purchase. That of the necessaries of life is altogether independent of the quantity of money which can be had for them. The reduction in the money price of labour would necessarily be attended with a proportionable one in that of all home manufactures, which would thereby gain some advantage in all foreign markets. The price of some manufactures would be reduced in a still greater proportion by the free importation of the raw materials. If raw silk could be imported from China and Indostan duty free, the silk manufacturers in England could greatly undersell those of both France and Italy. There would be no occasion to prohibit the importation of foreign silks and velvets. The cheapness of their goods would secure to our own workmen not only the possession of the home, but a very great command of the foreign market. Even the trade in the commodities taxed would be carried on with much more advantage than at present. If those commodities were delivered out of the public warehouse for foreign exportation, being in this case exempted from all taxes, the trade in them would be perfectly free. The carrying trade in all sorts of goods would under this system enjoy every possible advantage. If those commodities were delivered out for home consumption, the importer not being obliged to advance the tax till he had an opportunity of selling his goods, either to some dealer, or to some consumer, he could always afford to sell them cheaper than if he had been obliged to advance it at the moment of importation. Under the same taxes, the foreign trade of consumption even in the taxed commodities might in this manner be carried on with much more advantage than it can at present.
It was the object of the famous excise scheme of