Is not Nature herself a vast machine, of which the human species is but a very feeble spring? I see nothing contemptible either in her or her productions; all the beings who come out of her hands are good, are noble, are sublime, whenever they co-operate to the production of another, to the maintenance of harmony in the sphere where they must act. Of whatever nature the soul may be, whether it is made mortal, or whether it be supposed immortal; whether it is regarded as a spirit, or whether it be looked upon as a portion of the body; it will be found noble, it will be estimated great, it will be ranked good, it will be considered sublime, in a Socrates, in an Aristides, in a Cato: it will be thought abject, it will be viewed as despicable, it will be called corrupt, in a Claudius, in a Sejanus, in a Nero: its energies will be admired, we shall be delighted with its manner, fascinated with its efforts, in a Shakespeare, in a Corneille, in a Newton, in a Montesquieu: its baseness will be lamented, when we behold mean, contemptible men, who flatter tyranny, or who servilely cringe at the foot of superstition.
All that has been said in the course of this work, proves clearly that every thing is necessary; that every thing is always in order, relatively to Nature; where all beings do nothing more than follow the laws that are imposed on their respective classes. It is part of her plan, that certain portions of the earth shall bring forth delicious fruits, shall blossom beauteous flowers; whilst others shall only furnish brambles, shall yield nothing but noxious vegetables: she has been willing that some societies should produce wise men, great heroes; that others should only give birth to abject souls, contemptible men, without energy, destitute of virtue. Passions, winds, tempests, hurricanes, volcanoes, wars, plagues, famines, diseases, death, are as necessary to her eternal march as the beneficent heat of the sun, the serenity of the atmosphere, the gentle showers of spring, plentiful years, peace, health, harmony, life: vice and virtue, darkness and light, and science are equally necessary; the one are not benefits, the other are not evils, except for those beings whose happiness they influence by either favouring or deranging their peculiar mode of existence. The whole cannot be miserable, but it may contain unhappy individuals.
Nature, then, distributes with the same hand that which is called order, and that which is called disorder; that which is called pleasure, and that which is called pain: in short, she diffuses by the necessity of her existence, good and evil in the world we inhabit. Let not man, therefore, either arraign her bounty, or tax her with malice; let him not imagine that his feeble cries, his weak supplications, can never arrest her colossal power, always acting after immutable laws; let him submit silently to his condition; and when he suffers, let him not seek a remedy by recurring to chimeras that his own distempered imagination has created; let him draw from the stores of Nature herself, the remedies which she offers for the evil she brings upon him: if she sends him diseases, let him search in her bosom for those salutary productions to which she has given birth, which will cure them: if she gives him errors, she also furnishes him with experience to counteract them; in truth, she supplies him with an antidote suitable to destroy their fatal effects. If she permits man to groan under the pressure of his vices, beneath the load of his follies, she also shews him in virtue, a sure remedy for his infirmities: if the evils that some societies experience are necessary, when they shall have become too incommodious they will be irresistibly obliged to search for those remedies which Nature will always point out to them. If this Nature has rendered existence insupportable, to some unfortunate beings, whom she appears to have selected for her victims, still death, is a door that will surely be opened to them—that will deliver them from their misfortunes, although in their puny, imbecile, wayward judgment, they may be deemed impossible of cure.
Let not man, then, accuse Nature with being inexorable to him, since there does not exist in her whole circle an evil for which she has not furnished the remedy, to those who have the courage to seek it, who have the fortitude to apply it. Nature follows general and necessary laws in all her operations; physical calamity and moral evil are not to be ascribed to her want of kindness, but to the necessity of things. Physical calamity is the derangement produced in man's organs by physical causes which he sees act: moral evil is the derangement produced in him by physical causes of which the action is to him a secret. These causes always terminate by producing sensible effects, which are capable of striking his senses; neither the thoughts nor the will of man ever shew themselves, but by the marked effects they produce either in himself or upon those beings whom Nature has rendered susceptible of feeling their impulse. He suffers, because it is of the essence of some beings to derange the economy of his machine; he enjoys, because the properties of some beings are analogous to his own mode of existence; he is born, because it is of the nature of some matter to combine itself under a determinate form; he lives, he acts, he thinks, because it is of the essence of certain combinations to maintain themselves in existence by given means for a season; at length he dies, because a necessary law prescribes that all the combinations which are formed, shall either be destroyed or dissolve themselves. From all this it results, that Nature is impartial to all its productions; she submits man, like all other beings, to those eternal laws from which she has not even exempted herself; if she was to suspend these laws, even for an instant, from that moment disorder would reign in her, system; her harmony would be disturbed.
Those who wish to study Nature, must take experience for their guide; this, and this only, can enable them to dive into her secrets, to unravel by degrees, the frequently imperceptible woof of those slender causes, of which she avails herself to operate the greatest phenomena: by the aid of experience, man often discovers in her properties, perceives modes of action entirely unknown to the ages which have preceded him; those effects which his grandfathers contemplated as marvellous, which they regarded as supernatural efforts, looked upon as miracles, have become familiar to him in the present day, and are at this moment contemplated as simple and natural consequences, of which he comprehends the mechanism—of which he understands the cause—of which he can unfold the manner of action. Man, in fathoming Nature, has arrived at discovering the true causes of earthquakes; of the periodical motion of the sea; of subterraneous conflagrations; of meteors; of the electrical fluid, the whole of which were considered by his ancestors, and are still so by the ignorant, by the uninformed, as indubitable signs of heaven's wrath. His posterity, in following up, in rectifying the experience already made, will perhaps go further, and discover those causes which are totally veiled from present eyes. The united efforts of the human species will one day perhaps penetrate even into the sanctuary of Nature, and throw into light many of those mysteries which up to the present time she seems to have refused to all his researches.
In contemplating man under his true aspect; in quitting authority to follow experience; in laying aside error to consult reason; in submitting every thing to physical laws, from which his imagination has vainly exerted its utmost power to withdraw them; it will be found that the phenomena of the moral world follow exactly the same general rules as those of the physical; that the greater part of those astonishing effects, which ignorance, aided by his prejudices, make him consider as inexplicable, and regard as wonderful, are natural consequences flowing from simple causes. He will find that the eruption of a volcano and the birth of a Tamerlane are to Nature the same thing; in recurring to the primitive causes of those striking events which he beholds with consternation, which he contemplates with fearful alarm, in falling back to the sources of those terrible revolutions, those frightful convulsions, those dreadful explosions that distract mankind, lay waste the fairest works of Nature, ravage nations, and tear up society by the roots; he will find the wills that compassed the most surprising changes, that operated the most extensive alterations in the state of things, that brought about the most unlooked-for events, were moved by physical causes, whose exility made him treat them as contemptible; whose want of consequence in his own purblind eyes led him to believe them utterly incapable to give birth to the phenomena whose magnitude strikes him with such awe, whose stupendous range fills him with such amazement.
If man was to judge of causes by their effects, there would be no small causes in the universe. In a Nature where every thing is connected, where every thing acts and re-acts, moves and changes, composes and decomposes, forms and destroys, there is not an atom which does not play an important part—that does not occupy a necessary station; there is not an imperceptible particle, however minute, which, placed in convenient circumstances, does not operate the most prodigious effects. If man was in a capacity to follow the eternal chain, to pursue the concatenated links, that connect with their causes all the effects he witnesses, without losing sight of any one of its rings,—if he could unravel the ends of those insensible threads that give impulse to the thoughts, decision to the will, direction to the passions of those men who are called mighty, according to their actions, he would find, they are true atoms which Nature employs to move the moral world; that it is the unexpected but necessary function of these indiscernible particles of matter, it is their aggregation, their combination, their proportion, their fermentation, which modifying the individual by degrees, in despite of himself, frequently without his own knowledge, make him think, will, and act, in a determinate, but necessary mode. If, then, the will and the actions of this individual have an influence over a great number of other men, here is the moral world in a state of the greatest combustion, and those consequences ensue which man contemplates with fearful wonder. Too much acrimony in the bile of a fanatic—blood too much inflamed in the heart of a conqueror—a painful indigestion in the stomach of a monarch—a whim that passes in the mind of a woman—are sometimes causes sufficient to bring on war—to send millions of men to the slaughter—to root out an entire people—to overthrow walls—to reduce cities into ashes—to plunge nations into slavery—to put a whole people into mourning—to breed famine in a land—to engender pestilence—to propagate calamity—to extend misery—to spread desolation far and wide upon the surface of our globe, through a long series of ages.
The dominant passion of an individual of the human species, when it disposes of the passions of many others, arrives at combining their will, at uniting their efforts, and thus decides the condition of man. It is after this manner that an ambitious, crafty, and voluptuous Arab, gave to his countrymen an impulse of which the effect was the subjugation and desolation of vast countries in Asia, in Africa, and in Europe; whose consequences were sufficiently potential to erect a new, extensive, but slavish empire; to give a novel system of religion to millions of human beings; to overturn the altars of their former gods; in short, to alter the opinions, to change the customs of a considerable portion of the population of the earth. But in examining the primitive sources of this strange revolution, what were the concealed causes that had an influence over this man—that excited his peculiar passions, and modified his temperament? What was the matter from the combination of which resulted a crafty, ambitious, enthusiastic, and eloquent man; in short, a personage competent to impose on his fellow-creatures—capable of making them concur in his most extravagant views. They were, undoubtedly, the insensible particles of his blood; the imperceptible texture of his fibres; the salts, more or less acrid, that stimulated his nerves; the proportion of igneous fluid that circulated in his system. From whence came these elements? It was from the womb of his mother; from the aliments which nourished him; from the climate in which he had his birth; from the ideas he received; from the air which he respired; without reckoning a thousand inappreciable, a thousand transitory causes, that in the instance given had modified, had determined the passions of this importent being, who had thereby acquired the capacity to change the face of this mundane sphere.
To causes so weak in their principles, if in the origin the slightest obstacle had been opposed, these wonderful events, which have astounded man, would never have been produced. The fit of an ague, the consequence of bile a little too much inflamed, had sufficed, perhaps, to have rendered abortive all the vast projects, of the legislator of the Mussulmen. Spare diet, a glass of water, a sanguinary evacuation, would sometimes have been sufficient to have saved kingdoms.
It will be seen, then, that the condition of the human species, as well as that of each of its individuals, every instant depends on insensible causes, to which circumstances, frequently fugitive, give birth; that opportunity developes, that convenience puts in action: man attributes their effects to chance, whilst these causes operate necessarily, act according to fixed rules: he has frequently neither the sagacity nor the honesty to recur to their true principles; he regards such feeble motives with contempt, because he has been taught to consider them as incapable of producing such stupendous events. They are, however, these motives, weak as they may appear to be, these springs, so pitiful in his eyes, is which according to her necessary laws, suffice in the hands of Nature to move the universe. The conquests of a Gengis-Khan have nothing in them that is more strange to the eye of a philosopher than the explosion of a mine, caused in its principle by a feeble spark, which commences with setting fire to a single grain of powder; this presently communicates itself to many millions of other contiguous grains, of which the united force, the multiplied powers, terminate by blowing up mountains, overthrowing fortifications, or converting populous, well-built cities, into heaps of ruins.