I conclude my chapter, by calling for the attention of my reader to the wide difference there is between theory, where all the vices to be corrected appear clear and uncompounded; and practice, where they are often difficult to be discovered, and so complicated with one another, that it is hardly possible to apply any remedy which will not be productive of very great inconveniencies. Were the remedies for abuse as easily applied as theory seems to suggest, they would quickly be corrected every where.
Let theorists, therefore, beware of trusting to their science, when in matters of administration, they either advise those who are disposed blindly to follow them; or when they undertake to meddle in it themselves. An old practitioner feels difficulties which he cannot reduce to principles, nor render intelligible to every body; and the theorist who boldly undertakes to remedy every evil, and who foresees none on the opposite side, will most probably miscarry, and then give a very rational account for his ill success. A good theorist, therefore, may be excellent in deliberation, but without a long and confirmed practice, he will ever make a blundering statesman in practice.
Chap. XIX. Having treated of the fundamental principles of trade and industry; having explained the doctrine of demand and competition; the theory of prices, with the causes of their rise and fall; the difference between prime cost and profits; the consolidation of these; and the effects of such consolidation in any branch of manufacture; I set my subject in a new light, and present it to my readers under a more extended view. Having, as I may say, studied the map of every province, we are now to look at that of the whole country. Here the principal rivers and cities are marked; but all brooks, villages, &c. are suppressed. This is no more than a short recapitulation of what has been gone through already. Trade, considered in this view, divides itself into three districts, or into three stages of life, as it were, infancy, manhood, and old age.
During the infancy of trade, the statesman should lay the foundation of industry. He ought to multiply wants, encourage the supply of them; in short, pursue the principles of the first book, with this addition, that he must exclude all importation of foreign work. While luxury tends only to banish idleness, to give bread to those who are in want, and to advance dexterity, it is productive of the best effects.
When a people have fairly taken a laborious turn, when sloth is despised, and dexterity carried to perfection, then the statesman must endeavour to remove the incumbrances which must have proceeded from the execution of the first part of his plan. The scaffolding must be taken away when the fabric is compleated. These incumbrances are high prices, at which he has been obliged to wink, while he was inspiring a taste for industry in the advancement of agriculture and of manufactures; but now that he intends to supply foreign markets, he must multiply hands; set them in competition; bring down the price both of subsistence and work; and when the luxury of his people render this difficult, he must attack the manners of the rich, and give a check to the domestic consumption of superfluity, in order to have the more hands for the supply of strangers.
The last stage of trade is by far the most brilliant; when, upon the extinction of foreign trade, the wealth acquired comes to circulate at home. The variety of new principles which arise upon this revolution, makes the subject of what remains to be examined in the succeeding chapters.
Chap. XX. Before I enter upon the principles of inland commerce, I prepare the way, by a short dissertation upon the term luxury. I endeavour to analyse the word to the bottom, to discover, and to range in order, every idea which can be conveyed by it. In this way I vindicate the definition I have given of it (which is the consumption of superfluity) and shew that luxury, as I recommend it, is free from the imputation either of being vicious or abusive.
I distinguish, therefore, between luxury, sensuality, and excess, three terms often confounded, but conveying very different ideas. A person may consume great quantities of superfluity from a principle of ostentation, or even with a political view to encourage industry; him I call luxurious. Sensuality may be indulged in a cottage, as well as in a palace; and excess is purely relative to circumstances. Luxury, therefore, as well as sensuality, or any other passion, may be carried to excess, and so become vicious. Now excess in consumption is vicious in proportion as it affects our moral, physical, domestic, or political interests; that is to say, our mind, our body, our private fortune, or the state. When the consumption we make, does no harm in any of these respects, it may be called moderate and free from vice.
Our moral and physical interests are hurt by excess, in eating, drinking, love, and ease, or indolence; according as these gratifications do respectively affect the mind, or the body, or both.
Our domestic interest frequently obliges us to call that excess, which nature hardly finds sufficient; and, on other occasions, both mind and body go to destruction, by excesses which have contributed to amass the greatest fortunes.