I come now to resolve a difficulty which naturally results from this doctrine, and with which I shall close the chapter.
If it be true, that a crop in the most plentiful year is nearly consumed by the inhabitants, what becomes of them in years of scarcity; for nobody can deny, that there is a great difference between one crop and another. To this I answer, first, That I believe there is also a very great deceit, or common mistake, as to the difference between crops: a good year for one soil, is a bad one for another. But I shall not enlarge on this; because I have no sufficient proof of my opinion. The principal reason upon which I found it, is, that it is far from being true, that the same number of people consume always the same quantity of food. In years of plenty every one is well fed; the price of the lowest industry can procure subsistence sufficient to bear a division; food is not so frugally managed; a quantity of animals are fatted for use; all sorts of cattle are kept in good heart; and people drink more largely, because all is cheap. A year of scarcity comes, the people are ill fed, and when the lower classes come to divide with their children, the portions are brought to be very small; there is great oeconomy upon consumption, few animals are fatted for use, cattle look miserably, and a poor man cannot indulge himself with a cup of generous ale. Add to all these circumstances, that in England the produce of pasture is very considerable, and it commonly happens, that a bad year for grain, which proceeds from rains, is for the same reason a good year for pasture; and in the estimation of a crop, every circumstance must be allowed to enter.
From what has been said I must conclude in general, that the best corn country in the world, provided slavery be not established, does not produce wherewithal fully to maintain, as in years of plenty, one third more than its own inhabitants; for if this should be the case, all the policy of man would not be able to prevent the multiplication of them, until they arose nearly up to the mean proportion of the produce in ordinary years, and it is only what exceeds this standard, and proceeds from unusual plenty, which can be exported. Were plentiful years more common, mankind would be more numerous; were scarcity more frequent, numbers would be less. Numbers therefore must ever be, in my humble opinion, in the ratio of food, and multiplication will never stop until the balance comes to be nearly even.
CHAP. XVIII.
Of the Causes and Consequences of a Country’s being fully peopled.
In the titles of my chapters, I rather seek to communicate a rough idea of the subject than a correct one. In truth and in reason, there is no such thing as a country actually peopled to the full, if by this term numbers only are meant, without considering the proportion they bear to the consumption they make of the productions of their country. I have in a former chapter established a distinction between the physical and moral impossibility of increasing numbers. As to the physical impossibility, the case can hardly exist, because means of procuring subsistence from other countries, when the soil refuses to give more, seem, if not inexhaustible, at least very extensive. A country therefore fully peopled, that is, in a physical impossibility of increasing their numbers, is a chimerical and useless supposition. The subject here under consideration is, the situation of a people, who find it their interest to seek for subsistence from abroad. This may happen, and commonly does, long before the country itself is fully improved: it decides nothing as to the intrinsic fertility of the soil, and proves no more, than that the industry of the free hands has made a quicker progress in multiplying mouths, than that of the farmers in providing subsistence. To illustrate this idea, let me propose the following question.
Is multiplication the efficient cause of agriculture, or is agriculture that of multiplication?
I answer, that multiplication is the efficient cause of agriculture, though I allow, that, in the infancy of society, the spontaneous fruits of the earth, which are free to all, are the efficient cause of a multiplication, which may rise to the exact proportion of them; as has been said above. This must be explained.
I have already distinguished the fruits of agriculture from the earth’s spontaneous production: I must farther take notice, that when I employ the term agriculture in treating of modern policy, I always consider it to be exercised as a trade, and producing a surplus, and not as the direct means of subsisting, where all is consumed by the husbandman, as has been fully explained above. We have said, that it is the surplus produced from it, which proves a fund for multiplying inhabitants. Now there must be a demand for this surplus. Every person who is hungry will make a demand, but every such demand will not be answered, and will consequently have no effect. The demander must have an equivalent to give: it is this equivalent which is the spring of the whole machine; for without that the farmer will not produce any surplus, and consequently he will dwindle down to the class of those who labour for actual subsistence. The poor, who produce children, make an ineffectual demand, and when they cannot increase the equivalent, they divide the food they have with the new comers, and prove no encouragement to agriculture. By dividing, the whole become ill fed, miserable, and thus extinguish. Now because it is the effectual demand, as I may call it, which makes the husbandman labour for the sake of the equivalent, and because this demand increases, by the multiplication of those who have an equivalent to give, therefore I say that multiplication is the cause, and agriculture the effect. On the other hand, I think the spontaneous fruits of the earth, as in the supposition, may be considered as the cause of a certain limited multiplication; because in that case there is no equivalent demanded. The earth produces, whether her fruits be consumed or not: mankind are fed upon these gratuitously, and without labour, and the existence of the fruits is anterior to the production of those who are to consume them. Those who are first fed, draw their vigour from their food, and their multiplication from their vigour. Those who are produced, live freely upon their parent earth, and multiply until all the produce be consumed: then multiplication stops, as we have said; but establish agriculture, and multiplication will go on a-new. Consequently, my reader will say, agriculture is as much the cause of this new multiplication, as the spontaneous fruits were of the first. Here is a very natural conclusion, which seems directly to contradict what we have been endeavouring to prove; but the knot is easily untied. We have seen how the existence of agriculture must depend upon the industry of man; that is, on the only means of establishing agriculture: now, as this industry is chiefly promoted by the motive of providing for our children, the procreation of them must be considered as the first, or at least the most palpable political cause of setting mankind to work, and therefore may be considered as anterior to agriculture; whereas, on the other hand, the earth’s spontaneous productions[spontaneous productions] being in small quantity, and quite independent of man, appear, as it were, to be furnished by nature, in the same way as a small sum is given to a young man, in order to put him in a way of industry, and of making his fortune. The small sum sets him a-going, but it is his industry which makes the fortune. From this illustration it appears, that if the demand for food can be more readily supplied from abroad than from home, it will be the foreign subsistence, which will preserve numbers, produced from industry, not from domestic agriculture; and these numbers will, in their turn, produce an advancement of it at home, by inspiring a desire in the husbandman to acquire the equivalent which their countrymen give to strangers.
Such nations, whose statesmen have not the talent to engage the husbandmen to wish for the equivalent, which the labour of their fellow-citizens can produce; or, in other words, who cannot create reciprocal wants and dependencies among their subjects, must stand in a moral incapacity of augmenting in numbers. Of such states we have no occasion to treat in this chapter, any more than of those who are supposed to be in the physical incapacity of multiplying: our point of view is, to examine the natural consequences resulting from a demand for subsistence extending itself to foreign countries. This I take to be the mother of industry at home, as well as of trade abroad; two objects which come to be treated of in the second book.