CHAP. IX.
The Diversity of the Intellectual Faculties: they depend on Physical Causes, as do their Moral Qualities.—The Natural Principles of Society.—Morals.—Politics.
Nature is under the necessity of diversifying all her works. Elementary matter, different in its essence, must necessarily form different beings, various in their combinations, in their properties, in their modes of action, in their manner of existence. There is not, neither can there be, two beings, two combinations, which are mathematically and rigorously the same; because the place, the circumstances, the relations; the proportions, the modifications, never being exactly alike, the beings that result can never bear a perfect resemblance to each other: their modes of action must of necessity vary in something, even when we believe we find between them the greatest conformity.
In consequence of this principle, which every thing we see conspires to prove to be a truth, there are not two individuals of the human species who have precisely the same traits—who think exactly in the same manner—who view things under the same identical point of sight—who have decidedly the same ideas; consequently no two of them have uniformly the same system of conduct. The visible organs of man, as well as his concealed organs, have indeed some analogy, some common points of resemblance, some general conformity; which makes them appear, when viewed in the gross, to be affected in the same manner by certain causes: but the difference is infinite in the detail. The human soul may be compared to those instruments, of which the chords, already diversified in themselves, by the manner in which they have been spun, are also strung upon different notes: struck by the same impulse, each chord gives forth the sound that is peculiar to itself; that is to say, that which depends on its texture, its tension, its volume, on the momentary state in which it is placed by the circumambient air. It is this that produces the diversified spectacle, the varied scene, which the moral world offers to our view: it is from this that results the striking contrariety that is to be found in the minds, in the faculties, in the passions, in the energies, in the taste, in the imagination, in the ideas, in the opinions of man. This diversity is as great as that of his physical powers: like them it depends on his temperament, which is as much varied as his physiognomy. This variety gives birth to that continual series of action and reaction, which constitutes the life of the moral world: from this discordance results the harmony which at once maintains and preserves the human race.
The diversity found among the individuals of the human species, causes inequalities between man and man: this inequality constitutes the support of society. If all men were equal in their bodily powers, in their mental talents, they would not have any occasion for each other: it is the variation of his faculties, the inequality which this places him in, with regard to his fellows, that renders morals necessary to man: without these, he would live by himself, he would remain an isolated being. From whence it may be perceived, that this inequality of which man so often complains without cause—this impossibility which each man finds when in an isolated state, when left to himself, when unassociated with his fellow men, to labour efficaciously to his own welfare, to make his own security, to ensure his own conservation; places him in the happy situation of associating with his like, of depending on his fellow associates, of meriting their succour, of propitiating them to his views, of attracting their regard, of calling in their aid to chase away, by common and united efforts, that which would have the power to trouble or derange the order of his existence. In consequence of man's diversity, of the inequality that results, the weaker is obliged to seek the protection of the stronger; this, in his turn, recurs to the understanding, to the talents, to the industry of the weaker, whenever his judgment points out he can be useful to him: this natural inequality furnishes the reason why nations distinguish those citizens who have rendered their country eminent services. It is in consequence of his exigencies that man honors and recompenses those whose understanding, good deeds, assistance, or virtues, have procured for him real or supposed advantages, pleasures, or agreeable sensations of any sort: it is by this means that genius gains an ascendancy over the mind of man, and obliges a whole people to acknowledge its powers. Thus, the diversity and inequality of the faculties, as well corporeal as mental or intellectual, renders man necessary to his fellow man, makes him a social being, and incontestibly proves to him the necessity of morals.
According to this diversity of faculties, the individuals of the human species are divided into different classes, each in proportion to the effects produced, or the different qualities that may be remarked: all these varieties in man flow from the individual properties of his soul, or from the particular modification of his brain. It is thus, that wit, imagination, sensibility, talents, &c. diversify to infinity the differences that are to be found in man. It is thus, that some are called good, others wicked; some are denominated virtuous, others vicious; some are ranked as learned, others as ignorant; some are considered reasonable, others unreasonable, &c.
If all the various faculties attributed to the soul are examined, it will be found that like those of the body they are to be ascribed to physical causes, to which it will be very easy to recur. It will be found that the powers of the soul are the same as those of the body; that they always depend on the organization of this body, on its peculiar properties, on the permanent or transitory modifications that it undergoes; in a word, on its temperament.
Temperament is, in each individual, the habitual state in which he finds the fluids and the solids of which his body is composed. This temperament varies, by reason of the elements or matter that predominate in him, in consequence of the different combinations, of the various modifications, which this matter, diversified in itself, undergoes in his machine. Thus, in one, the blood is superabundant; in another, the bile; in a third, phlegm, &c.