_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.