political economy-第31章
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en are mutually necessary to each other。 Europe has a double need of the subsistence which it might procure from Barbary； if this magnificent shore of Africa were given back to civilization； and from the consumers we should soon find there。 The institution of property is the result of social conventions。 In a society subjected to laws and a regulating government； the interest of each may be implicitly relied on for producing the advantage of all； because the aberrations of this private interest are； in every case of need； limited by public authority。 But； in the great human society formed among independent nations； there is no law or general government to repress the passions of each sovereign： besides； the interest of those sovereigns is not necessarily conformable to that of their subjects； or； to speak more correctly； the one is contrary to the other； whenever the object of the rulers is to maintain their tyranny。 Thus respect for the pretended right of properly claimed by each government over its territory； is not referrible to the right of private property； and； besides； it cannot be reciprocal。 The same circumstances which cause a tyrannical government to impede its own civilization； render it equally incapable of respecting that of its neighbours； and submitting to the laws of nations。 But whilst more than three quarters of the habitable globe are； by the faults of their governments； deprived of the inhabitants they should support； we； at the present day； in almost the whole of Europe； experience the opposite calamity； that of not being able to maintain a superabundant population； which surpasses the proportion of labour required； and which； before dying of poverty； will diffuse its sufferings over the whole class of such as live by the labour of their hands。 For our part； we owe this calamity to the imprudent zeal of our governments。 With us； religious instruction； legislation； social organization； every thing has tended to produce a population； the existence of which was not provided for beforehand。 The labour was not adjusted to the number of men； and； frequently； the same zeal with which it was attempted to multiply the number of births； was afterwards employed； in all arts； to diminish the required number of hands。 The proportion which should subsist in the progress of the different departments of society has been broken； and the suffering has become universal。 Mr Malthus； the first writer who awakened public attention to this calamity under which nations have long suffered； without knowing it； whilst he gave an alarm to legislators； did not reach the true principles which he seemed on the road to find。 On reading his writings； one is stuck at once with an essential error in his reasoning； and with the importance of the facts to which he appeals。 Such confusion； in a matter to which the happiness of man is attached； may produce the most fatal consequences。 By rigorously applying principles deficient in accuracy； the most grievous errors may be committed； and if； on the other hand； the error is discovered； there is a risk of simultaneously rejecting both the observations and the precepts。 Mr Malthus established as a principle that the population of every country is limited by the quantity of subsistence which that country can furnish。 This proposition is true only when applied to the whole terrestial globe； or to a country which has no possibility of trade； in all other cases； foreign trade modifies it； and； farther； which is more important； this proposition is but abstractly true； … true in a manner inapplicable to political economy。 Population has never reached the limit of subsistence； and probably it never will。 Long before the population can be arrested by the inability of the country to produce more food； it is arrested by the inability of the population to purchase that food； or to labour in producing it。 The whole population of a state； says Mr Malthus； may be doubled every twenty…five years； it would thus follow a geometrical progression： but the labour employed to meliorate a soil； already in culture； can add to its produce nothing but quantities continually decreasing。 Admitting that； during the first twenty…five years； the produce of land has been doubled； during the second we shall scarcely succeed in compelling it to produce a half more； then a third more； then a fourth。 Thus the progress of subsistence will not follow the geometrical； but the arithmetical progression； and； in the course of two centuries； whilst the population increases； as the numbers； 1。 2； 4； 8； 16； 32； 64； 128； subsistence will increase not faster than the numbers； 1； 2； 3； 4； 5； 6； 7； 8。 This reasoning； which serves as a basis to the system of Mr。 Malthus； and to which he incessantly appeals； through the whole course of his book； is completely sophistical。 It opposes the possible increase of the human population； considered abstractly； and without regarding circumstances； to the positive increase of animals and vegetables in a confined place； under circumstances more and more unfavourable。 They ought not thus to be compared。 Abstractly； the multiplication of food follows a geometrical progression； no less than the multiplication of men。 It follows it only in a much more rapid manner。 In a given space and time； this progression is not followed any more by the one species than the other。 Population is arrested first； and arrests subsistence in its turn； when the obstacle is removed； both begin again to increase； till they reach a new limit； equally common to both； and the history of the universe has never yet presented the example of a country in which the multiplication of food could not be more rapid than that of the co…existent population。 In a state absolutely savage； men live on the produce of hunting and fishing。 The fish and the game are multiplied like man； in a geometrical progression； but much more rapid than the one he follows。 Man； it is true； hinders their reproduction by destroying them； but； on the other hand； they arrest his； for it is not certainly among nations of hunters that the population is doubled every twenty…five years； and whenever this destruction is suspended； the reproduction of game will be much more rapid than that of men。 The progress of civilization substitutes the pastoral life for a life of hunting； and the natural produce of the ground； better managed； is sufficient for a much more numerous population of men and of animals。 The deserts； which scarcely support five hundred Cherokee hunters； would be sufficient for ten thousand Tartar shepherds； with all their flocks； the multiplication of the latter is always much more rapid than that of men； whilst the production of a man requires twenty…five years； that of an ox requires but five； of a sheep but two； of a hog but one。 The number of oxen may be doubled in six years； that of sheep in three； that of hogs may be rendered ten times as great in two years。 Whenever a shepherd gains possession of a country formerly abandoned to hunting； the multiplication of his flocks will greatly precede that of his family； when； afterwards； one of the two is arrested； the other will be so too。 But when civilization makes a new step； pastoral nations abandon their flocks for agriculture； and； instead of trusting to the natural productions of the vegetable kingdom； they produce and multiply them by their labours。 It is calculated that thirty families may live on the corn produced by a piece of ground； which would have supported only a single family by its produce in cattle。 At the time； therefore； when a nation passes from the pastoral to the agricultural state； it in some sense acquires a country thirty times as large as the one it formerly occupied。 If the whole of this country is not cultivated； if even in the most civilized kingdoms； there remains a vast extent nf fertile land still employed in unprofitable pasturage； it is an evident proof that other causes than want of subsistence prevent the development of population。 The multiplication of vegetables follows a geometrical progression much more rapid still than the multiplication of cattle。 In common tillage； corn increases five…fold in the course of a year； potatoes ten…fold in the sam
