Thus far as to the different ways in which climate and soil affect the creation of wealth. But another point of equal, or perhaps of superior, importance remains behind. After the wealth has been created, a question arises as to how it is to be distributed; that is to say, what proportion is to go to the upper classes, and what to the lower. In an advanced stage of society, this depends upon several circumstances of great complexity, and which it is not necessary here to examine.57 But in a very early stage of society, and before its later and refined complications have begun, it may, I think, be proved that the distribution of wealth is, like its creation, governed entirely by physical laws; and that those laws are moreover so active as to have invariably kept a vast majority of the inhabitants of the fairest portion of the globe in a condition of constant and inextricable poverty. If this can be demonstrated, the immense importance of such laws is manifest. For since wealth is an undoubted source of power, it is evident that, supposing other things equal, an inquiry into the distribution of wealth is an inquiry into the distribution of power, and, as such, will throw great light on the origin of those social and political inequalities, the play and opposition of which form a considerable part of the history of every civilized country.
If we take a general view of this subject, we may say that after the creation and accumulation of wealth have once fairly begun, it will be distributed among two classes, those who labour, and those who do not labour; the latter being, as a class, the more able, the former the more numerous. The fund by which both classes are supported is immediately created by the lower class, whose physical energies are directed, combined, and as it were economized, by the superior skill of the upper class. The reward of the workmen is called their wages; the reward of the contrivers is called their profits. At a later period, there will arise what may be called the saving class; that is, a body of men who neither contrive nor work, but lend their accumulations to those who contrive, and in return for the loan, receive a part of that reward which belongs to the contriving class. In this case, the members of the saving class are rewarded for their abstinence in refraining from spending their accumulations, and this reward is termed the interest of their money; so that there is made a threefold division – Interest, Profits, and Wages. But this is a subsequent arrangement, which can only take place to any extent when wealth has been considerably accumulated; and in the stage of society we are now considering, this third, or saving class, can hardly be said to have a separate existence.58 For our present purpose, therefore, it is enough to ascertain what those natural laws are, which, as soon as wealth is accumulated, regulate the proportion in which it is distributed to the two classes of labourers and employers.
Now, it is evident that wages being the price paid for labour, the rate of wages must, like the price of all other commodities, vary according to the changes in the market. If the supply of labourers outstrips the demand, wages will fall; if the demand exceeds the supply, they will rise. Supposing, therefore, that in any country there is a given amount of wealth to be divided between employers and workmen, every increase in the number of the workmen will tend to lessen the average reward each can receive. And if we set aside those disturbing causes by which all general views are affected, it will be found that, in the long-run, the question of wages is a question of population; for although the total sum of the wages actually paid depends upon the largeness of the fund from which they are drawn, still the amount of wages received by each man must diminish as the claimants increase, unless, owing to other circumstances, the fund itself should so advance as to keep pace with the greater demands made upon it.59
To know the circumstances most favourable to the increase of what may be termed the wages-fund is a matter of great moment, but is one with which we are not immediately concerned. The question we have now before us, regards not the accumulation of wealth, but its distribution; and the object is, to ascertain what those physical conditions are, which, by encouraging a rapid growth of population, over-supply the labour market, and thus keep the average rate of wages at a very low point.
Of all the physical agents by which the increase of the labouring classes is affected, that of food is the most active and universal. If two countries, equal in all other respects, differ solely in this – that in one the national food is cheap and abundant, and in the other scarce and dear, the population of the former country will inevitably increase more rapidly than the population of the latter.60 And, by a parity of reasoning, the average rate of wages will be lower in the former than in the latter, simply because the labour-market will be more amply stocked.61 An inquiry, therefore, into the physical laws on which the food of different countries depends, is, for our present purpose, of the greatest importance; and fortunately it is one respecting which we are able, in the present state of chemistry and physiology, to arrive at some precise and definite conclusions.
The food consumed by man produces two, and only two, effects necessary to his existence. These are, first to supply him with that animal heat without which the functions of life would stop; and secondly, to repair the waste constantly taking place in his tissues, that is, in the mechanism of his frame. For each of these separate purposes there is a separate food. The temperature of our body is kept up by substances which contain no nitrogen, and are called non-azotized; the incessant decay in our organism is repaired by what are known as azotized substances, in which nitrogen is always found.62 In the former case, the carbon of non-azotized food combines with the oxygen we take in, and gives rise to that internal combustion by which our animal heat is renewed. In the latter case, nitrogen having little affinity for oxygen,63 the nitrogenous or azotized food is, as it were, guarded against combustion;64 and being thus preserved, is able to perform its duty of repairing the tissues, and supplying those losses which the human organism constantly suffers in the wear and tear of daily life.
These are the two great divisions of food;65 and if we inquire into the laws