Front Page Titles (by Subject) BOOK III, CHAPTER II: OF THE EFFECT OF CONSUMPTION IN GENERAL. - A Treatise on Political Economy
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BOOK III, CHAPTER II: OF THE EFFECT OF CONSUMPTION IN GENERAL. - Jean Baptiste Say, A Treatise on Political Economy 
A Treatise on Political Economy; or the Production, Distribution, and Consumption of Wealth, ed. Clement C. Biddle, trans. C. R. Prinsep from the 4th ed. of the French, (Philadelphia: Lippincott, Grambo & Co., 1855. 4th-5th ed. ).
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BOOK III, CHAPTER II
OF THE EFFECT OF CONSUMPTION IN GENERAL.
The immediate effect of consumption of every kind is, the loss of value, consequently, of wealth, to the owner of the article consumed. This is the invariable and inevitable consequence, and should never be lost sight of in reasoning on this matter. A product consumed is a value lost to all the world and to all eternity; but the further consequence, that may follow, will depend upon the circumstances and nature of the consumption.
If the consumption be unproductive, there usually results the gratification of some want, but no reproduction of value whatever; if productive, there results the satisfaction of no want, but a creation of new value, equal, inferior, or superior in amount to that consumed, and profitable or unprofitable to the adventurer accordingly.6
Thus, consumption may be regarded as an act of barter, wherein the owner of the value consumed gives up that value on the one hand, and receives in return, either the satisfaction of a personal want, or a fresh value, equivalent to the value consumed.
It may be proper here to remark, that consumption, productive of nothing beyond a present gratification, requires no skill or talent in the consumer. It requires neither labour nor ingenuity to eat a good dinner, or dress in fine clothes.7 On the contrary, productive consumption, besides yielding no immediate or present gratification, requires an exertion of combined labour and skill, or, of what has all along been denominated, industry.
When the owner of a product ready for consumption has himself no industrious faculty, and wishes, but knows not how to consume it productively, he lends it to some one more industrious than himself, who commences by destroying it, but in such a way, as to reproduce another, and thereby enable himself to make a full restitution to the lender, after retaining the profit of his own skill and labour. The value returned consists of different objects from that lent, it is true; indeed, the condition of a loan is in substance this; to replace the value lent, of whatever amount, say 2000 dollars, at a time specified, by other value, equivalent to the same amount of silver coin of the like weight and quality at the time of repayment. An object, lent on condition of specific restitution, cannot be available for reproduction; because, by the terms of the loan, it is not to be consumed.
Sometimes a producer is the consumer of his own product; as when the farmer eats his own poultry or vegetables; or the clothier wears his own cloth. But, the objects of human consumption being far more varied and numerous, than the objects of each person's production respectively, most operations of consumption are preceded by a process of barter. He first turns into money, or receives in that shape, the values composing his individual revenue; and then changes again that money for the articles he purposes to consume. Wherefore, in common parlance, to spend and to consume have become nearly synonymous. Yet, by the mere act of buying, the value expended is not lost; for the article purchased has likewise a value, which may be parted with again for what it cost, if it has not been bought over-dear. The loss of value does not happen till the actual consumption, after which the value is destroyed; it then ceases to exist, and is not the object of a second consumption. For this reason it is, that in domestic life, the bad management of the wife soon runs through a moderate fortune; for she in general regulates the daily consumption of the family, which is the chief source of expense, and one that is always recurring.
This will serve to expose the error of the notion, that where there is no loss of money, there can be no loss of wealth. It is the commonest thing in the world to hear it roundly asserted, that the money spent is not lost, but remains in the country; and, therefore, that the country cannot be impoverished by its internal expenditure. It is true, the value of the money remains as before; but the object, or the hundred objects, perhaps, that have been successively bought with the same money, have been consumed, and their value destroyed.
Wherefore, it is superfluous, I had almost said ridiculous, to confine at home the national money, for the purpose of preserving national wealth. Money by no means prevents the consumption of value, and the consequent diminution of wealth; on the contrary, it facilitates the arrival of consumable objects at their ultimate destination; which is a most beneficial act, when the end is well chosen, and the result satisfactory. Nor would it be correct even to maintain, that the export of specie is at all events a loss, although its presence in the country may be no hindrance to consumption or to the diminution of wealth. For unless it be made without any view to a return, which is rarely the case, it is in fact the same thing as productive consumption; being merely a sacrifice of one value, for the purpose of obtaining another. Where no return whatever is in view, there indeed is so much loss of national capital; but the loss would be quite as great, were goods, and not money, so exported.
[6.]This may be illustrated by the burning of fuel in a grate or furnace. The fuel burnt, serves either to give warmth, or to cook victuals, boil dyeing ingredients, and the like, and thereby to increase their value. There is no utility in the mere gratuitous act of burning, except inasmuch as it tends to satisfy some human want, that of warmth for instance; in which case, the consumption is unproductive; or inasmuch as it confers upon a substance submitted to its action, a value, that may replace the value of the fuel consumed; in which case the consumption is productive.
[7.]There is unquestionably a sort of talent requisite in the expenditure of a large income with credit to the proprietor, so as to gratify personal taste, without awakening the self-love of others; to oblige without the sense of humiliation; to labour for the public good, without alarming individual interests. But this kind of talent is referable rather to the head of practical, whilst its influence upon the rest of mankind falls within the province of theoretical, morality.