If we inquire what those physical agents are by which the human race is most powerfully influenced, we shall find that they may be classed under four heads: namely, Climate, Food, Soil, and the General Aspect of Nature; by which last, I mean those appearances which, though presented chiefly to the sight, have, through the medium of that or other senses, directed the association of ideas, and hence in different countries have given rise to different habits of national thought. To one of these four classes, may be referred all the external phenomena by which Man has been permanently affected. The last of these classes, or what I call the General Aspect of Nature, produces its principal results by exciting the imagination, and by suggesting those innumerable superstitions which are the great obstacles to advancing knowledge. And as, in the infancy of a people, the power of such superstitions is supreme, it has happened that the various Aspects of Nature have caused corresponding varieties in the popular character, and have imparted to the national religion peculiarities which, under certain circumstances, it is impossible to efface. The other three agents, namely, Climate, Food, and Soil, have, so far as we are aware, had no direct influence of this sort; but they have, as I am about to prove, originated the most important consequences in regard to the general organization of society, and from them there have followed many of those large and conspicuous differences between nations, which are often ascribed to some fundamental difference in the various races into which mankind is divided. But while such original distinctions of race are altogether hypothetical,38 the discrepancies which are caused by difference of climate, food, and soil, are capable of a satisfactory explanation, and, when understood, will be found to clear up many of the difficulties which still obscure the study of history. I purpose, therefore, in the first place, to examine the laws of these three vast agents in so far as they are connected with Man in his social condition; and having traced the working of those laws with as much precision as the present state of physical knowledge will allow, I shall then examine the remaining agent, namely, the General Aspect of Nature, and shall endeavour to point out the most important divergencies to which its variations have, in different countries, naturally given rise.
Beginning, then, with climate, food, and soil, it is evident that these three physical powers are in no small degree dependent on each other: that is to say, there is a very close connexion between the climate of a country and the food which will ordinarily be grown in that country; while at the same time the food is itself influenced by the soil which produces it, as also by the elevation or depression of the land, by the state of the atmosphere, and, in a word, by all those conditions to the assemblage of which the name of Physical Geography is, in its largest sense, commonly given.39
The union between these physical agents being thus intimate, it seems advisable to consider them not under their own separate heads, but rather under the separate heads of the effects produced by their united action. In this way we shall rise at once to a more comprehensive view of the whole question; we shall avoid the confusion that would be caused by artificially separating phenomena which are in themselves inseparable; and we shall be able to see more clearly the extent of that remarkable influence, which, in an early stage of society, the powers of Nature exercise over the fortunes of Man.
Of all the results which are produced among a people by their climate, food, and soil, the accumulation of wealth is the earliest, and in many respects the most important. For although the progress of knowledge eventually accelerates the increase of wealth, it is nevertheless certain that, in the first formation of society, the wealth must accumulate before the knowledge can begin. As long as every man is engaged in collecting the materials necessary for his own subsistence, there will be neither leisure nor taste for higher pursuits; no science can possibly be created, and the utmost that can be effected will be an attempt to economise labour by the contrivance of such rude and imperfect instruments as even the most barbarous people are able to invent.
In a state of society like this, the accumulation of wealth is the first great step that can be taken, because without wealth there can be no leisure, and without leisure there can be no knowledge. If what a people consume is always exactly equal to what they possess, there will be no residue, and therefore, no capital being accumulated, there will be no means by which the unemployed classes may be maintained.40 But if the produce is greater than the consumption, an overplus arises, which, according to well-known principles, increases itself, and eventually becomes a fund out of which, immediately or remotely, every one is supported who does not create the wealth upon which he lives. And now it is that the existence of an intellectual class first becomes possible, because for the first time there exists a previous accumulation, by means of which men can use what they did not produce, and are thus enabled to devote themselves to subjects for which at an earlier period the pressure of their daily wants would have left them no time.
Thus it is that of all the great social improvements the accumulation of wealth must be the first, because without it there can be neither taste nor leisure for that acquisition of knowledge on which, as I shall hereafter prove, the progress of civilization depends. Now, it is evident that among an entirely ignorant people, the rapidity with which wealth is created will be solely regulated by the physical peculiarities of their country. At a later period, and when the wealth has been capitalized, other causes come into play; but until this occurs, the progress can only depend on two circumstances: first on the energy and regularity with which labour is conducted, and secondly on the returns made to that labour by the bounty of nature. And these two causes are themselves the result of physical antecedents. The returns made to labour are governed by the fertility of the soil, which is itself regulated partly by the admixture of its chemical components, partly by the extent to which, from rivers or from other natural causes, the soil is irrigated, and partly by the heat and humidity of the atmosphere. On the other hand, the energy and regularity with which labour is conducted, will be entirely dependent on the influence of climate. This will display itself in two different ways. The first, which is a very obvious consideration, is, that if the heat is intense, men will be indisposed, and in some degree unfitted, for that active industry which in a milder climate they might willingly have exerted. The other consideration, which has been less noticed, but is equally important, is, that climate influences labour not only by enervating the labourer or by invigorating him, but also by the effect it produces on the regularity of his habits.41 Thus we find that no people living in a very northern latitude have ever possessed that steady and unflinching industry for which the inhabitants of temperate regions are remarkable. The reason of this becomes clear, when we remember that in the more northern countries the severity of the weather, and, at some seasons, the deficiency of light, render it impossible for the people to continue their usual out-of-door employments. The result is, that the working classes being compelled to cease from their ordinary pursuits, are rendered more prone to desultory habits; the chain of their industry is as it were broken, and they lose that impetus which long-continued and uninterrupted practice never fails to give. Hence there arises a national character more fitful and capricious than that possessed by a people whose climate permits the regular exercise of their ordinary industry. Indeed, so powerful is this principle, that we may perceive its operation even under the most opposite circumstances. It would be difficult to conceive a greater difference in government, laws, religion, and manners, than that which distinguishes Sweden and Norway on the one hand, from Spain and Portugal on the other. But these four countries have one great point in common. In all of them, continued agricultural industry is impracticable. In the two southern countries, labour is interrupted by the heat, by the dryness of the weather, and by the consequent state of the soil. In the two northern countries, the same effect is produced by the severity of the winter and the shortness of the days. The consequence is, that these four nations, though so different in other respects, are all remarkable for a certain instability and fickleness of character; presenting a striking contrast to the more regular and settled habits which are established in countries whose climate subjects the working classes to fewer interruptions, and imposes on them the necessity of a more constant and unremitting employment.42
These are the great physical causes by which the creation of wealth is governed. There are, no doubt, other circumstances which operate with considerable force, and which, in a more advanced state of society, possess an equal, and sometimes a superior, influence. But this is at a later period; and looking at the history of wealth in its earliest stage, it will be found to depend entirely on soil and climate: the soil regulating the returns made to any given amount of labour; the climate regulating the energy and constancy of the labour itself. It requires but a hasty glance at past events, to prove the immense power of these two great physical conditions. For there is no instance in history of any country being civilized by its own efforts, unless it has possessed one of these conditions in a very favourable form. In Asia, civilization has always been confined to that vast tract where a rich and alluvial soil has secured to man that wealth without some share of which no intellectual progress can begin. This great region extends, with a few interruptions, from the east of Southern China to the western coasts of Asia Minor, of Phœnicia, and of Palestine. To the north of this immense belt, there is a long line of barren country which has invariably been peopled by rude and wandering tribes, who are kept in poverty by the ungenial nature of the soil, and who, as long as they remained on it, have never emerged from their uncivilized state. How entirely this depends on physical causes, is evident from the fact that these same Mongolian and Tartarian hordes have, at different periods, founded great monarchies in China, in India, and in Persia, and have, on all such occasions, attained a civilization nowise inferior to that possessed by the most nourishing of the ancient kingdoms. For in the fertile plains of Southern Asia,43 nature has supplied all the materials of wealth; and there it was that these barbarous tribes acquired for the first time some degree of refinement, produced a national literature, and organized a national polity; none of which things they, in their native land, had been able to effect.44 In the same way, the Arabs in their own country have, owing to the extreme aridity of their soil,45 always been a rude and uncultivated people; for in their case, as in all others, great ignorance is the fruit of great poverty. But in the seventh century they conquered Persia;46 in the eighth century they conquered the best part of Spain;47 in the ninth century they conquered the Punjaub, and eventually nearly the whole of India.48 Scarcely were they established in their fresh settlements, when their character seemed to undergo a great change. They, who in their original land were little else than roving savages, were now for the first time able to accumulate wealth, and, therefore, for the first time did they make some progress in the arts of civilization. In Arabia they had been a mere race of wandering shepherds;49 in their new abodes they became the founders of mighty empires – they built cities, endowed schools, collected libraries; and the traces of their power are still to be seen at Cordova, at Bagdad, and at Delhi.50 Precisely in the same manner, there is adjoining Arabia at the north, and only separated from it elsewhere by the narrow waters of the Red Sea, an immense sandy plain, which, covering the whole of Africa in the same latitude, extends westward until it reaches the shores of the Atlantic.51 This enormous tract is, like Arabia, a barren waste;52 and therefore, as in Arabia, the inhabitants have always been entirely uncivilized, acquiring no knowledge, simply because they have accumulated no wealth.53 But this great desert is, in its eastern part, irrigated by the waters of the Nile, the overflowing of which covers the sand with a rich alluvial deposit, that yields to labour the most abundant, and indeed the most extraordinary, returns.54 The consequence is, that in that spot, wealth was rapidly accumulated, the cultivation of knowledge quickly followed, and this narrow strip of land55 became the seat of Egyptian civilization; a civilization which, though grossly exaggerated,56 forms a striking contrast to the barbarism of the other nations of Africa, none of which have been able to work out their own progress, or emerge, in any degree, from the ignorance to which the penury of nature has doomed them.
These considerations clearly prove that of the two primary causes of civilization, the fertility of the soil is the one which in the ancient world exercised most influence. But in European civilization, the other great cause, that is to say, climate, has been the most powerful; and this, as we have seen, produces an effect partly on the capacity of the labourer for work, partly on the regularity or irregularity of his habits. The difference in the result has curiously corresponded with the difference in the cause. For, although all civilization must have for its antecedent the accumulation of wealth, still what subsequently occurs will be in no small degree determined by the conditions under which the accumulation took place. In Asia, and in Africa, the condition was a fertile soil, causing an abundant return; in Europe, it was a happier climate, causing more successful labour. In the former case, the effect depends on the relation between the soil and its produce; in other words, the mere operation of one part of external nature upon another. In the latter case, the effect depends on the relation between the climate and the labourer; that is, the operation of external nature not upon itself, but upon man. Of these two classes of relations, the first, being the less complicated, is the less liable to disturbance, and therefore came sooner into play. Hence it is, that, in the march of civilization, the priority is unquestionably due to the most fertile parts of Asia and Africa. But although their civilization was the earliest, it was very far, indeed, from being the best or most permanent. Owing to circumstances which I shall presently state, the only progress which is really effective depends, not upon the bounty of nature, but upon the energy of man. Therefore it is, that the civilization of Europe, which, in its earliest stage, was governed by climate, has shown a capacity of development unknown to those civilizations which were originated by soil. For the powers of nature, notwithstanding their apparent magnitude, are limited and stationary; at all events, we have not the slightest proof that they have ever increased, or that they will ever be able to increase. But the powers of man, so far as experience and analogy can guide us, are unlimited; nor are we possessed of any evidence which authorizes us to assign even an imaginary boundary at which the human intellect will, of necessity, be brought to a stand. And as this power which the mind possesses of increasing its own resources, is a peculiarity confined to man, and one eminently distinguishing him from what is commonly called external nature, it becomes evident that the agency of climate, which gives him wealth by stimulating his labour, is more favourable to his ultimate progress than the agency of soil, which likewise gives him wealth, but which does so, not by exciting his energies, but by virtue of a mere physical relation between the character of the soil and the quantity or value of the produce that it almost spontaneously affords.
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 which regulate the relation they bear to man, we shall find that in each division the most important agent is climate. When men live in a hot country, their animal heat is more easily kept up than when they live in a cold one; therefore they require a smaller amount of that non-azotized food, the sole business of which is to maintain at a certain point the temperature of the body. In the same way, they, in the hot country, require a smaller amount of azotized food, because on the whole their bodily exertions are less frequent, and on that account the decay of their tissues is less rapid.66
Since, therefore, the inhabitants of hot climates do, in their natural and ordinary state, consume less food than the inhabitants of cold ones, it inevitably follows that, provided other things remain equal, the growth of population will be more rapid in countries which are hot than in those which are cold. For practical purposes, it is immaterial whether the greater plenty of a substance by which the people are fed arises from a larger supply, or whether it arises from a smaller consumption. When men eat less, the result will be just the same as if they had more; because the same amount of nutriment will go farther, and thus population will gain a power of increasing more quickly than it could do in a colder country, where, even if provisions were equally abundant, they, owing to the climate, would be sooner exhausted.
This is the first point of view in which the laws of climate are, through the medium of food, connected with the laws of population, and therefore with the laws of the distribution of wealth. But there is also another point of view, which follows the same line of thought, and will be found to strengthen the argument just stated. This is, that in cold countries, not only are men compelled to eat more than in hot ones, but their food is dearer, that is to say, to get it is more difficult, and requires a greater expenditure of labour. The reason of this I will state as briefly as possible, without entering into any details beyond those which are absolutely necessary for a right understanding of this interesting subject.
The objects of food are, as we have seen, only two: namely, to keep up the warmth of the body, and repair the waste in the tissues.67 Of these two objects, the former is effected by the oxygen of the air entering our lungs, and, as it travels through the system, combining with the carbon which we take in our food.68 This combination of oxygen and carbon never can occur without producing a considerable amount of heat, and it is in this way that the human frame is maintained at its necessary temperature.69 By virtue of a law familiar to chemists, carbon and oxygen, like all other elements, will only unite in certain definite proportions;70 so that to keep up a healthy balance, it is needful that the food which contains the carbon should vary according to the amount of oxygen taken in: while it is equally needful that we should increase the quantity of both of these constituents whenever a greater external cold lowers the temperature of the body. Now it is obvious that in a very cold climate, this necessity of providing a nutriment more highly carbonized will arise in two distinct ways. In the first place, the air being denser, men imbibe at each inspiration a greater volume of oxygen than they would do in a climate where the air is rarefied by heat.71 In the second place, cold accelerates their respiration, and thus obliging them to inhale more frequently than the inhabitants of hot countries, increases the amount of oxygen which they on an average take in.72 On both these grounds the consumption of oxygen becomes greater: it is therefore requisite that the consumption of carbon should also be greater; since by the union of these two elements in certain definite proportions, the temperature of the body and the balance of the human frame can alone be maintained.73
Proceeding from these chemical and physiological principles, we arrive at the conclusion, that the colder the country is in which a people live, the more highly carbonized will be their food. And this, which is a purely scientific inference, has been verified by actual experiment. The inhabitants of the polar regions consume large quantities of whale-oil and blubber; while within the tropics such food would soon put an end to life, and therefore the ordinary diet consists almost entirely of fruit, rice, and other vegetables. Now it has been ascertained by careful analysis, that in the polar food there is an excess of carbon; in the tropical food an excess of oxygen. Without entering into details, which to the majority of readers would be distasteful, it may be said generally, that the oils contain about six times as much carbon as the fruits, and that they have in them very little oxygen;74 while starch, which is the most universal, and, in reference to nutrition, the most important constituent in the vegetable world,75 is nearly half oxygen.76
The connexion between this circumstance and the subject before us is highly curious: for it is a most remarkable fact, and one to which I would call particular attention, that owing to some more general law, of which we are ignorant, highly carbonized food is more costly than food in which comparatively little carbon is found. The fruits of the earth, of which oxygen is the most active principle, are very abundant; they may be obtained without danger, and almost without trouble. But that highly carbonized food, which in a very cold climate is absolutely necessary to life, is not produced in so facile and spontaneous a manner. It is not, like vegetables, thrown up by the soil; but it consists of the fat, the blubber, and the oil77 of powerful and ferocious animals. To procure it, man must incur great risk and expend great labour. And although this is undoubtedly a contrast of extreme cases, still it is evident that the nearer a people approach to either extremity, the more subject will they be to the conditions by which that extremity is governed. It is evident that, as a general rule, the colder a country is, the more its food will be carbonized; the warmer it is, the more its food will be oxidized.78 At the same time, carbonized food, being chiefly drawn from the animal world, is more difficult to obtain than oxidized food, which is drawn from the vegetable world.79 The result has been that among nations where the coldness of the climate renders a highly carbonized diet essential, there is for the most part displayed, even in the infancy of society, a bolder and more adventurous character, than we find among those other nations whose ordinary nutriment, being highly oxidized, is easily obtained, and indeed is supplied to them, by the bounty of nature, gratuitously and without a struggle.80 From this original divergence there follow many other consequences, which, however, I am not now concerned to trace; my present object being merely to point out how this difference of food affects the proportion in which wealth is distributed to the different classes.