The Project Gutenberg EBook of The System of Nature, Volume 1, by Paul Henri Thiery (Baron D'Holbach) This eBook is for the use of anyone anywhere at no cost and with almost no restrictions whatsoever. You may copy it, give it away or re-use it under the terms of the Project Gutenberg License included with this eBook or online at www.gutenberg.org Title: The System of Nature, Volume 1 Author: Paul Henri Thiery (Baron D'Holbach) Commentator: Robert D. Richardson, Jr Release Date: September, 2005 [EBook #8909] This file was first posted on August 23, 2003 Last Updated: June 7, 2013 Language: English Character set encoding: ISO-8859-1 *** START OF THIS PROJECT GUTENBERG EBOOK THE SYSTEM OF NATURE, VOLUME 1 *** Text file produced by Freethought Archives and Distributed Proofreaders HTML file produced by David Widger THE SYSTEM OF NATURE, VOLUME I (of II) By Paul Henri Thiery (Baron d'Holbach) Introduction by Robert D. Richardson, Jr. PRODUCTION NOTES: First published in French in 1770 under the pseudonym of Mirabaud. This e- book based on a facsimile reprint of an English translation originally published 1820-21. This e-text covers the first of the original two volumes. INTRODUCTION Paul Henri Thiery, Baron d'Holbach (1723-1789), was the center of the radical wing of the philosophes. He was friend, host, and patron to a wide circle that included Diderot, D'Alembert, Helvetius, and Hume. Holbach wrote, translated, edited, and issued a stream of books and pamphlets, often under other names, that has made him the despair of bibliographers but has connected his name, by innuendo, gossip, and association, with most of what was written in defense of atheistic materialism in late eighteenth-century France. Holbach is best known for The System of Nature (1770) and deservedly, since it is a clear and reasonably systematic exposition of his main ideas. His initial position determines all the rest of his argument. "There is not, there can be nothing out of that Nature which includes all beings." Conceiving of nature as strictly limited to matter and motion, both of which have always existed, he flatly denies that there is any such thing as spirit or a supernatural. Mythology began, Holbach claims, when men were still in a state of nature and at the point when wise, strong, and for the most part benign men were arising as leaders and lawgivers. These leaders "formed discourses by which they spoke to the imaginations of their willing auditors," using the medium of poetry, because it "seem{ed} best adapted to strike the mind." Through poetry, then, and by means of "its images, its fictions, its numbers, its rhyme, its harmony... the entire of nature, as well as all its parts, was personified, by its beautiful allegories." Thus mythology is given an essentially political origin. These early poets are literally legislators of mankind. "The first institutors of nations, and their immediate successors in authority, only spoke to the people by fables, allegories, enigmas, of which they reserved to themselves the right of giving an explanation." Holbach is rather condescending about the process, but since mythology is a representation of nature itself, he is far more tolerant of mythology than he is of the next step. "Natural philosophers and poets were transformed by leisure into metaphysicians and theologians," and at this point a fatal error was introduced: the theologians made a distinction between the power of nature and nature itself, separated the two, made the power of nature prior to nature, and called it God. Thus man was left with an abstract and chimerical being on one side and a despoiled inert nature, destitute of power, on the other. In Holbach's critique the point at which theology split off from mythology marks the moment of nature's alienation from itself and paves the way for man's alienation from nature. Holbach is thus significant for Romantic interest in myth in two ways. First, he provides a clear statement of what can be loosely called the antimythic position, that rationalist condescension and derogation of all myth and all religion that was never far from the surface during the Romantic era. Holbach was and is a reminder that the Romantic affirmation of myth was never easy, uncritical, or unopposed. Any new endorsement of myth had to be made in the teeth of Holbach and the other skeptics. The very vigor of the Holbachian critique of myth impelled the Romantics to think more deeply and defend more carefully any new claim for myth. Secondly, although Holbach's argument generally drove against myth and religion both, he did make an important, indeed a saving distinction between mythology and theology. Mythology is the more or less harmless personification of the power in and of nature; theology concerns itself with what for Holbach was the nonexistent power beyond or behind nature. By exploiting this distinction it would become possible for a Shelley, for example, to take a strong antitheological—even an anti-Christian—position without having to abandon myth. Holbach was one of William Godwin's major sources for his ideas about political justice, and Shelley, who discussed Holbach with Godwin, quotes extensively from The System of Nature in Queen Mab. Furthermore, Volney's Ruins, another important book for Shelley, is directly descended from The System of Nature. On the other side, Holbach was a standing challenge to such writers as Coleridge and Goethe and was reprinted and retranslated extensively in America, where his work was well known to the rationalist circle around Jefferson and Barlow. Issued in 1770 as though by Jean Baptiste de Mirabaud (a former perpetual secretary to the Académie française who had died ten years before), La Système de la nature was translated and reprinted frequently. The Samuel Wilkinson translation we have chosen to reprint was the most often reprinted or pirated version in English. A useful starting point for Holbach's work is Jerome Vercruysse, Bibliographie descriptive des écrits du baron d'Holbach (Paris, 1971). The difficult subject of the essentially clandestine evolution of biblical criticism as an anti-Christian and antimyth critique in the early part of the eighteenth century, before the well-documented era of the biblical critic Eichhorn in Germany, is illuminated in Ira Wade, The Clandestine Organization and Diffusion of Philosophic Ideas in France from 1700-1750 (Princeton Univ. Press, 1938). Robert D. Richardson, Jr. University of Denver {Illustration: Parke sculp't M. DE MIRABAUD} THE SYSTEM OF NATURE; OR, THE LAWS OF THE MORAL AND PHYSICAL WORLD. TRANSLATED FROM THE ORIGINAL FRENCH OF M. DE MIRABAUD VOL. I. CONTENTS INTRODUCTION THE SYSTEM OF NATURE; OR, THE LAWS OF THE MORAL AND PHYSICAL WORLD. VOL. I. DETAILED CONTENTS PREFACE MIRABAUD'S SYSTEM OF NATURE PART I. CHAP. I. CHAP. II. CHAP. III. CHAP. IV. CHAP. V. CHAP. VI. CHAP. VII. CHAP. VIII. CHAP. IX. CHAP. X. CHAP. XI CHAP. XII. CHAP. XIII. CHAP. XIV. CHAP. XV. CHAP. XVI CHAP. XVII. CONCLUSION. DETAILED CONTENTS Preface PART I—Laws of Nature.—Of man.—The faculties of the soul. —Doctrine of immortality.—On happiness. CHAP. I. Nature and her laws. CHAP. II. Of motion and its origin. CHAP. III. Of matter—of its various combinations—of its diversified motion—or of the course of Nature. CHAP. IV. Laws of motion common to every being of Nature—attraction and repulsion—inert force-necessity. CHAP. V. Order and confusion—intelligence—chance. CHAP. VI. Moral and physical distinctions of man—his origin. CHAP. VII. The soul and the spiritual system. CHAP. VII. The soul and the spiritual system. CHAP. VIII. The intellectual faculties derived from the faculty of feeling. 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. CHAP. X. The soul does not derive its ideas from itself—it has no innate ideas. CHAP. XI. Of the system of man's free-agency. CHAP. XII. An examination of the opinion which pretends that the system of fatalism is dangerous. CHAP. XIII. Of the immortality of the soul—of the doctrine of a future state—of the fear of death. CHAP. XIV. Education, morals, and the laws suffice to restrain man—of the desire of immortality—of suicide. CHAP. XV. Of man's true interest, or of the ideas he forms to himself of happiness.—Man cannot be happy without virtue. CHAP. XVI. The errors of man.—Upon what constitutes happiness.—The true source of his evils.—Remedies that may be applied. CHAP. XVII. Those ideas which are true, or founded upon Nature, are the only remedies for the evil of man.—Recapitulation.—Conclusions of the First Part. PREFACE The source of man's unhappiness is his ignorance of Nature. The pertinacity with which he clings to blind opinions imbibed in his infancy, which interweave themselves with his existence, the consequent prejudice that warps his mind, that prevents its expansion, that renders him the slave of fiction, appears to doom him to continual error. He resembles a child destitute of experience, full of ideal notions: a dangerous leaven mixes itself with all his knowledge: it is of necessity obscure, it is vacillating and false:—He takes the tone of his ideas on the authority of others, who are themselves in error, or else have an interest in deceiving him. To remove this Cimmerian darkness, these barriers to the improvement of his condition; to disentangle him from the clouds of error that envelope him; to guide him out of this Cretan labyrinth, requires the clue of Ariadne, with all the love she could bestow on Theseus. It exacts more than common exertion; it needs a most determined, a most undaunted courage—it is never effected but by a persevering resolution to act, to think for himself; to examine with rigour and impartiality the opinions he has adopted. He will find that the most noxious weeds have sprung up beside beautiful flowers; entwined themselves around their stems, overshadowed them with an exuberance of foliage, choaked the ground, enfeebled their growth, diminished their petals; dimmed the brilliancy of their colours; that deceived by their apparent freshness of their verdure, by the rapidity of their exfoliation, he has given them cultivation, watered them, nurtured them, when he ought to have plucked out their very roots. Man seeks to range out of his sphere: notwithstanding the reiterated checks his ambitious folly experiences, he still attempts the impossible; strives to carry his researches beyond the visible world; and hunts out misery in imaginary regions. He would be a metaphysician before he has become a practical philosopher. He quits the contemplation of realities to meditate on chimeras. He neglects experience to feed on conjecture, to indulge in hypothesis. He dares not cultivate his reason, because from his earliest days he has been taught to consider it criminal. He pretends to know his date in the indistinct abodes of another life, before he has considered of the means by which he is to render himself happy in the world he inhabits: in short, man disdains the study of Nature, except it be partially: he pursues phantoms that resemble an ignis-fatuus, which at once dazzle, bewilders, and affright: like the benighted traveller led astray by these deceptive exhalations of a swampy soil, he frequently quits the plain, the simple road of truth, by pursuing of which, he can alone ever reasonably hope to reach the goal of happiness. The most important of our duties, then, is to seek means by which we may destroy delusions that can never do more than mislead us. The remedies for these evils must be sought for in Nature herself; it is only in the abundance of her resources, that we can rationally expect to find antidotes to the mischiefs brought upon us by an ill directed, by an overpowering enthusiasm. It is time these remedies were sought; it is time to look the evil boldly in the face, to examine its foundations, to scrutinize its superstructure: reason, with its faithful guide experience, must attack in their entrenchments those prejudices, to which the human race has but too long been the victim. For this purpose reason must be restored to its proper rank,—it must be rescued from the evil company with which it is associated. It has been too long degraded—too long neglected—cowardice has rendered it subservient to delirium, the slave to falsehood. It must no longer be held down by the massive claims of ignorant prejudice. Truth is invariable—it is requisite to man—it can never harm him—his very necessities, sooner or later, make him sensible of this; oblige him to acknowledge it. Let us then discover it to mortals—let us exhibit its charms—let us shed it effulgence over the darkened road; it is the only mode by which man can become disgusted with that disgraceful superstition which leads him into error, and which but too often usurps his homage by treacherously covering itself with the mask of truth—its lustre can wound none but those enemies to the human race whose power is bottomed solely on the ignorance, on the darkness in which they have in almost every claimed contrived to involve the mind of man. Truth speaks not to those perverse beings:—her voice can only be heard by generous souls accustomed to reflection, whose sensibilities make them lament the numberless calamities showered on the earth by political and religious tyranny—whose enlightened minds contemplate with horror the immensity, the ponderosity of that series of misfortunes which error has in all ages overwhelmed mankind. To error must be attributed those insupportable chains which tyrants, which priests have forged for most nations. To error must be equally attributed that abject slavery into which the people of almost every country have fallen. Nature designed they should pursue their happiness by the most perfect freedom.—To error must be attributed those religious terrors which, in almost every climate, have either petrified man with fear, or caused him to destroy himself for coarse or fanciful beings. To error must be attributed those inveterate hatreds, those barbarous persecutions, those numerous massacres, those dreadful tragedies, of which, under pretext of serving the interests of heaven, the earth has been but too frequently made the theatre. It is error consecrated by religious enthusiasm, which produces that ignorance, that uncertainty in which man ever finds himself with regard to his most evident duties, his clearest rights, the most demonstrable truths. In short, man is almost everywhere a poor degraded captive, devoid of greatness of soul, of reason, or of virtue, whom his inhuman gaolers have never permitted to see the light of day. Let us then endeavour to disperse those clouds of ignorance, those mists of darkness, which impede man on his journey, which obscure his progress, which prevent his marching through life with a firm, with a steady grip. Let us try to inspire him with courage— with respect for his reason—with an inextinguishable love for truth—with a remembrance of Gallileo—to the end that he may learn to know himself—to know his legitimate rights—that he may learn to consult his experience, and no longer be the dupe of an imagination led astray by authority—that he may renounce the prejudices of his childhood—that he may learn to found his morals on his nature, on his wants, on the real advantage of society—that he may dare to love himself—that he may learn to pursue his true happiness by promoting that of others—in short, that he may no longer occupy himself with reveries either useless or dangerous—that he may become a virtuous, a rational being, in which case he cannot fail to become happy. If he must have his chimeras, let him at least learn to permit others to form theirs after their own fashion; since nothing can be more immaterial than the manner of men's thinking on subjects not accessible to reason, provided those thoughts be not suffered to embody themselves into actions injurious to others: above all, let him be fully persuaded that it is of the utmost importance to the inhabitants of this world to be JUST, KIND, and PEACEABLE. Far from injuring the cause of virtue, an impartial examination of the principles of this work will shew that its object is to restore truth to its proper temple, to build up an altar whose foundations shall be consolidated by morality, reason, and justice: from this sacred pane, virtue guarded by truth, clothed with experience, shall shed forth her radiance on delighted mortals; whose homage flowing consecutively shall open to the world a new aera, by rendering general the belief that happiness, the true end of man's existence, can never be attained but BY PROMOTING THAT OF HIS FELLOW CREATURE. In short, man should learn to know, that happiness is simply an emanative quality formed by reflection; that each individual ought to be the sun of his own system, continually shedding around him his genial rays; that these, re-acting, will keep his own existence constantly supplied with the requisite heat to enable him to put forth kindly fruit. MIRABAUD'S SYSTEM OF NATURE By Paul Henri Thiery (Baron D'Holbach) Translated From The Original, by Samuel Wilkinson PART I. LAWS OF NATURE—OF MAN—THE FACULTIES OF THE SOUL—DOCTRINE OF IMMORTALITY—ON HAPPINESS. CHAP. I. Nature and her Laws. Man has always deceived himself when he abandoned experience to follow imaginary systems.—He is the work of nature.—He exists in Nature.—He is submitted to the laws of Nature.—He cannot deliver himself from them:—cannot step beyond them even in thought. It is in vain his mind would spring forward beyond the visible world: direful and imperious necessity ever compels his return— being formed by Nature, he is circumscribed by her laws; there exists nothing beyond the great whole of which he forms a part, of which he experiences the influence. The beings his fancy pictures as above nature, or distinguished from her, are always chimeras formed after that which he has already seen, but of which it is utterly impossible he should ever form any finished idea, either as to the place they occupy, or their manner of acting—for him there is not, there can be nothing out of that Nature which includes all beings. Therefore, instead of seeking out of the world he inhabits for beings who can procure him a happiness denied to him by Nature, let him study this Nature, learn her laws, contemplate her energies, observe the immutable rules by which she acts.—Let him apply these discoveries to his own felicity, and submit in silence to her precepts, which nothing can alter.—Let him cheerfully consent to be ignorant of causes hid from him under the most impenetrable veil.—Let him yield to the decrees of a universal power, which can never be brought within his comprehension, nor ever emancipate him from those laws imposed on him by his essence. The distinction which has been so often made between the physical and the moral being, is evidently an abuse of terms. Man is a being purely physical: the moral man is nothing more than this physical being considered under a certain point of view; that is to say, with relation to some of his modes of action, arising out of his individual organization. But is not this organization itself the work of Nature? The motion or impulse to action, of which he is susceptible, is that not physical? His visible actions, as well as the invisible motion interiorly excited by his will or his thoughts, are equally the natural effects, the necessary consequences, of his peculiar construction, and the impulse he receives from those beings by whom he is always surrounded. All that the human mind has successively invented, with a view to change or perfect his being, to render himself happy, was never more than the necessary consequence of man's peculiar essence, and that of the beings who act upon him. The object of all his institutions, all his reflections, all his knowledge, is only to procure that happiness toward which he is continually impelled by the peculiarity of his nature. All that he does, all that he thinks, all that he is, all that he will be, is nothing more than what Universal Nature has made him. His ideas, his actions, his will, are the necessary effects of those properties infused into him by Nature, and of those circumstances in which she has placed him. In short, art is nothing but Nature acting with the tools she has furnished. Nature sends man naked and destitute into this world which is to be his abode: he quickly learns to cover his nakedness—to shelter himself from the inclemencies of the weather, first with artlessly constructed huts, and the skins of the beasts of the forest; by degrees he mends their appearance, renders them more convenient: he establishes manufactories to supply his immediate wants; he digs clay, gold, and other fossils from the bowels of the earth; converts them into bricks for his house, into vessels for his use, gradually improves their shape, and augments their beauty. To a being exalted above our terrestrial globe, man would not appear less subjected to the laws of Nature when naked in the forest painfully seeking his sustenance, than when living in civilized society surrounded with ease, or enriched with greater experience, plunged in luxury, where he every day invents a thousand new wants and discovers a thousand new modes of supplying them. All the steps taken by man to regulate his existence, ought only to be considered as a long succession of causes and effects, which are nothing more than the development of the first impulse given him by nature. The same animal, by virtue of his organization, passes successively from the most simple to the most complicated wants; it is nevertheless the consequence of his nature. The butterfly whose beauty we admire, whose colours are so rich, whose appearance is so brilliant, commences as an inanimate unattractive egg; from this, heat produces a worm, this becomes a chrysalis, then changes into that beautiful insect adorned with the most vivid tints: arrived at this stage he reproduces, he generates; at last despoiled of his ornaments, he is obliged to disappear, having fulfilled the task imposed on him by Nature, having performed the circle of transformation marked out for beings of his order. The same course, the same change takes place in the vegetable world. It is by a series of combinations originally interwoven with the energies of the aloe, that this plant is insensibly regulated, gradually expanded, and at the end of a number of years produces those flowers which announce its dissolution. It is equally so with man, who in all his motion, all the changes he undergoes, never acts but according to the laws peculiar to his organization, and to the matter of which he is composed. The physical man, is he who acts by the causes our faculties make us understand. The moral man, is he who acts by physical causes, with which our prejudices preclude us from becoming perfectly acquainted. The wild man is a child destitute of experience, incapable of proceeding in his happiness, because he has not learnt how to oppose resistance to the impulses he receives from those beings by whom he is surrounded. The civilized man, is he whom experience and sociality have enabled to draw from nature the means of his own happiness, because he has learned to oppose resistance to those impulses he receives from exterior beings, when experience has taught him they would be destructive to his welfare. The enlightened man is man in his maturity, in his perfection; who is capable of advancing his own felicity, because he has learned to examine, to think for himself, and not to take that for truth upon the authority of others, which experience has taught him a critical disquisition will frequently prove erroneous. The happy man is he who knows how to enjoy the benefits bestowed upon him by nature: in other words, he who thinks for himself; who is thankful for the good he possesses; who does not envy the welfare of others, nor sigh after imaginary benefits always beyond his grasp. The unhappy man is he who is incapacitated to enjoy the benefits of nature; that is, he who suffers others to think for him; who neglects the absolute good he possesses, in a fruitless search after ideal benefits; who vainly sighs after that which ever eludes his pursuit. It necessarily results, that man in his enquiry ought always to contemplate experience, and natural philosophy: These are what he should consult in his religion,—in his morals,—in his legislation,—in his political government,—in the arts,—in the sciences,—in his pleasures,—above all, in his misfortunes. Experience teaches that Nature acts by simple, regular, and invariable laws. It is by his senses, man is bound to this universal Nature; it is by his perception he must penetrate her secrets; it is from his senses he must draw experience of her laws. Therefore, whenever he neglects to acquire experience or quits its path, he stumbles into an abyss; his imagination leads him astray. All the errors of man are physical: he never deceives himself but when he neglects to return back to nature, to consult her laws, to call practical knowledge to his aid. It is for want of practical knowledge he forms such imperfect ideas of matter, of its properties, of its combinations, of its power, of its mode of action, and of the energies which spring from its essence. Wanting this experience, the whole universe, to him, is but one vast scene of error. The most ordinary results appear to him the most astonishing phenomena; he wonders at every thing, understands nothing, and yields the guidance of his actions to those interested in betraying his interests. He is ignorant of Nature, and he has mistaken her laws; he has not contemplated the necessary routine which she has marked out for every thing she holds. Mistaken the laws of Nature, did I say? He has mistaken himself: the consequence is, that all his systems, all his conjectures, all his reasonings, from which he has banished experience, are nothing more than a tissue of errors, a long chain of inconsistencies. Error is always prejudicial to man: it is by deceiving himself, the human race is plunged into misery. He neglected Nature; he did not comprehend her laws; he formed gods of the most preposterous and ridiculous kinds: these became the sole objects of his hope, and the creatures of his fear: he was unhappy, he trembled under these visionary deities; under the supposed influence of visionary beings created by himself; under the terror inspired by blocks of stone; by logs of wood; by flying fish; or the frowns of men, mortal as himself, whom his disturbed fancy had elevated above that Nature of which alone he is capable of forming any idea. His very posterity laughs at his folly, because experience has convinced them of the absurdity of his groundless fears—of his misplaced worship. Thus has passed away the ancient mythology, with all the trifling and nonsensical attributes attached to it by ignorance. Not understanding that Nature, equal in her distributions, entirely destitute of malice, follows only necessary and immutable laws, when she either produces beings or destroys them, when she causes those to suffer, whose construction creates sensibility; when she scatters among them good and evil; when she subjects them to incessant change—he did not perceive it was in the breast of Nature herself, that it was in her exuberance he ought to seek to satisfy his deficiencies; for remedies against his pains; for the means of rendering himself happy: he expected to derive these benefits from fantastic beings, whom he supposed to be above Nature; whom he mistakingly imagined to be the authors of his pleasures, and the cause of his misfortunes. From hence it appears that to his ignorance of Nature, man owes the creation of those illusive powers; under which he has so long trembled with fear; that superstitious worship, which has been the source of all his misery, and the evils entailed upon posterity. For want of clearly comprehending his own peculiar nature, his proper course, his wants, and his rights, man has fallen in society, from FREEDOM into SLAVERY. He had forgotten the purpose of his existence, or else he believed himself obliged to suppress the natural desires of his heart, to sacrifice his welfare to the caprice of chiefs, either elected by himself, or submitted to without examination. He was ignorant of the true policy of association—of the object of government; he disdained to listen to the voice of Nature, which loudly proclaimed the price of all submission to be protection and happiness: the end of all government is the benefit of the governed, not the exclusive advantage of the governors. He gave himself up without enquiry to men like himself, whom his prejudices induced him to contemplate as beings of a superior order, as Gods upon earth, they profited by his ignorance, took advantage of his prejudices, corrupted him, rendered him vicious, enslaved him, and made him miserable. Thus man, intended by Nature for the full enjoyment of liberty, to patiently search out her laws, to investigate her secrets, to cling to his experience; has, from a neglect of her salutary admonitions, from an inexcusable ignorance of his own peculiar essence, fallen into servility: has been wickedly governed. Having mistaken himself, he has remained ignorant of the indispensable affinity that subsists between him, and the beings of his own species: having mistaken his duty to himself, it consequently follows, he has mistaken his duty to others. He made a calculation in error of what his happiness required; he did not perceive, what he owed to himself, the excesses he ought to avoid, the desires he ought to resist, the impulses he ought to follow, in order to consolidate his felicity, to promote his comfort, and to further his advantage. In short, he was ignorant of his true interests; hence his irregularities, his excesses, his shameful extravagance, with that long train of vices, to which he has abandoned himself, at the expense of his preservation, at the hazard of his permanent prosperity. It is, therefore, ignorance of himself that has hindered man from enlightening his morals. The corrupt authorities to which he had submitted, felt an interest in obstructing the practice of his duties, even when he knew them. Time, with the influence of ignorance, aided by his corruption, gave them a strength not to be resisted by his enfeebled voice. His duties continued unperformed, and he fell into contempt both with himself and with others. The ignorance of Man has endured so long, he has taken such slow, such irresolute steps to ameliorate his condition, only because he has neglected to study Nature, to scrutinize her laws, to search out her expedients, to discover her properties, that his sluggishness finds its account, in permitting himself to be guided by example, rather than to follow experience, which demands activity; to be led by routine, rather than by his reason, which enjoins reflection; to take that for truth upon the authority of others, which would require a diligent and patient investigation. From hence may be traced the hatred man betrays for every thing that deviates from those rules to which he has been accustomed; hence his stupid, his scrupulous respect for antiquity, for the most silly, the most absurd and ridiculous institutions of his fathers: hence those fears that seize him, when the most beneficial changes are proposed to him, or the most likely attempts are made to better his condition. He dreads to examine, because he has been taught to hold it irreverent of something immediately connected with his welfare; his credulity suffers him to believe the interested advice, and spurns at those who wish to show him the danger of the road he is travelling. This is the reason why nations linger on in the most shameful lethargy, suffering under abuses handed down from century to century, trembling at the very idea of that which alone can repair their calamities. It is for want of energy, for want of consulting experience, that medicine, natural philosophy, agriculture, painting, in fact, all the useful sciences, have so long remained under the fetters of authority, have progressed so little: those who profess these sciences, prefer treading the beaten paths, however imperfect, rather than strike out new ones,—they prefer the phrensy of their imagination, their voluntary conjectures, to that laboured experience which alone can extract her secrets from Nature. Man, in short, whether from sloth or from terror, having abnegated the evidence of his senses, has been guided in all his actions, in all his enterprizes, by imagination, by enthusiasm, by habit, by preconceived opinions, but above all, by the influence of authority, which knew well how to deceive him, to turn his ignorance to esteem, his sloth to advantage. Thus imaginary, unsubstantial systems, have supplied the place of experience—of mature reflection—of reason. Man, petrified with his fears, intoxicated with the marvellous, stupified with sloth, surrendered his experience: guided by his credulity, he was unable to fall back upon it; he became consequently inexperienced; from thence he gave birth to the most ridiculous opinions, or else adopted all those vague chimeras, all those idle notions offered to him by men whose interest it was to continue him in that lamentable state of ignorance. Thus the human race has continued so long in a state of infancy, because man has been inattentive to Nature; has neglected her ways, because he has disdained experience—because he has thrown by his reason—because he has been enraptured with the marvellous and the supernatural,—because he has unnecessarily TREMBLED. These are the reasons there is so much trouble in conducting him from this state of childhood to that of manhood. He has had nothing but the most trifling hypotheses, of which he has never dared to examine either the principles or the proofs, because he has been accustomed to hold them sacred, to consider them as the most perfect truths, and which he is not permitted to doubt, even for an instant. His ignorance made him credulous; his curiosity made him swallow the wonderful: time confirmed him in his opinions, and he passed his conjectures from race to race for realities; a tyrannical power maintained him in his notions, because by those alone could society be enslaved. It was in vain that some faint glimmerings of Nature occasionally attempted the recall of his reason—that slight corruscations of experience sometimes threw his darkness into light, the interest of the few was founded on his enthusiasm; their pre-eminence depended on his love of the marvellous; their very existence rested on the firmness of his ignorance; they consequently suffered no opportunity to escape, of smothering even the transient flame of intelligence. The many were thus first deceived into credulity, then forced into submission. At length the whole science of man became a confused mass of darkness, falsehood, and contradictions, with here and there a feeble ray of truth, furnished by that Nature, of which he can never entirely divest himself; because, without his perception, his necessities are continually bringing him back to her resources. Let us then, if possible, raise ourselves above these clouds of prepossession! Let us quit the heavy atmosphere in which we are enucleated; let us in a more unsullied medium—in a more elastic current, contemplate the opinions of men, and observe their various systems. Let us learn to distrust a disordered conception; let us take that faithful monitor, experience, for our guide; let us consult Nature, examine her laws, dive into her stores; let us draw from herself, our ideas of the beings she contains; let us recover our senses, which interested error has taught us to suspect; let us consult that reason, which, for the vilest purposes has been so infamously calumniated, so cruelly dishonoured; let us examine with attention the visible world; let us try, if it will not enable us to form a supportable judgment of the invisible territory of the intellectual world: perhaps it may be found there has been no sufficient reason for distinguishing them—that it is not without motives, well worthy our enquiry, that two empires have been separated, which are equally the inheritance of nature. The universe, that vast assemblage of every thing that exists, presents only matter and motion: the whole offers to our contemplation, nothing but an immense, an uninterrupted succession of causes and effects; some of these causes are known to us, because they either strike immediately on our senses, or have been brought under their cognizance, by the examination of long experience; others are unknown to us, because they act upon us by effects, frequently very remote from their primary cause. An immense variety of matter, combined under an infinity of forms, incessantly communicates, unceasingly receives a diversity of impulses. The different qualities of this matter, its innumerable combinations, its various methods of action, which are the necessary consequence of these associations, constitute for man what he calls the ESSENCE of beings: it is from these varied essences that spring the orders, the classes, or the systems, which these beings respectively possess, of which the sum total makes up that which is known by the term nature. Nature, therefore, in its most significant meaning, is the great whole that results from the collection of matter, under its various combinations, with that contrariety of motion, which the universe presents to our view. Nature, in a less extended sense, or considered in each individual, is the whole that results from its essence; that is to say, the peculiar qualities, the combination, the impulse, and the various modes of action, by which it is discriminated from other beings. It is thus that MAN is, as a whole, or in his nature, the result of a certain combination of matter, endowed with peculiar properties, competent to give, capable of receiving, certain impulses, the arrangement of which is called organization; of which the essence is, to feel, to think, to act, to move, after a manner distinguished from other beings, with which he can be compared. Man, therefore, ranks in an order, in a system, in a class by himself, which differs from that of other animals, in whom we do not perceive those properties of which he is possessed. The different systems of beings, or if they will, their particular natures, depend on the general system of the great whole, or that Universal Nature, of which they form a part; to which every thing that exists is necessarily submitted and attached. Having described the proper definition that should be applied to the word NATURE, I must advise the reader, once for all, that whenever in the course of this work the expression occurs, that "Nature produces such or such an effect," there is no intention of personifying that nature which is purely an abstract being; it merely indicates that the effect spoken of necessarily springs from the peculiar properties of those beings which compose the mighty macrocosm. When, therefore, it is said, Nature demands that man should pursue his own happiness, it is to prevent circumlocution—to avoid tautology; it is to be understood, that it is the property of a being that feels, that thinks, that acts, to labour to its own happiness; in short, that is called natural, which is conformable to the essence of things, or to the laws, which Nature prescribes to the beings she contains, in the different orders they occupy, under the various circumstances through which they are obliged to pass. Thus health is natural to man in a certain state; disease is natural to him under other circumstances; dissolution, or if they will, death, is a natural state for a body, deprived of some of those things, necessary to maintain the existence of the animal, &c. By ESSENCE is to be understood, that which constitutes a being, such as it is; the whole of the properties or qualities by which it acts as it does. Thus, when it is said, it is the essence of a stone to fall, it is the same as saying that its descent is the necessary effect of its gravity—of its density—of the cohesion of its parts—of the elements of which it is composed. In short, the essence of a being is its particular, its individual nature. CHAP. II. Of Motion, and its Origin. Motion is an effect by which a body either changes, or has a tendency to change, its position: that is to say, by which it successively corresponds with different parts of space, or changes its relative distance to other bodies. It is motion alone that establishes the relation between our senses and exterior or interior beings: it is only by motion that these beings are impressed upon us—that we know their existence—that we judge of their properties—that we distinguish the one from the other—that we distribute them into classes. The beings, the substances, or the various bodies of which Nature is the assemblage, are themselves effects of certain combinations or causes which become causes in their turn. A CAUSE is a being which puts another in motion, or which produces some change in it. The EFFECT is the change produced in one body, by the motion or presence of another. Each being, by its essence, by its peculiar nature, has the faculty of producing, is capable of receiving, has the power of communicating, a variety of motion. Thus some beings are proper to strike our organs; these organs are competent to receiving the impression, are adequate to undergoing changes by their presence. Those which cannot act on any of our organs, either immediately and by themselves, or immediately by the intervention of other bodies, exist not for us; since they can neither move us, nor consequently furnish us with ideas: they can neither be known to us, nor of course be judged of by us. To know an object, is to have felt it; to feel it, it is requisite to have been moved by it. To see, is to have been moved, by something acting on the visual organs; to hear, is to have been struck, by something on our auditory nerves. In short, in whatever mode a body may act upon us, whatever impulse we may receive from it, we can have no other knowledge of it than by the change it produces in us. Nature, as we have already said, is the assemblage of all the beings, consequently of all the motion of which we have a knowledge, as well as of many others of which we know nothing, because they have not yet become accessible to our senses. From the continual action and re-action of these beings, result a series of causes and effects; or a chain of motion guided by the constant and invariable laws peculiar to each being; which are necessary or inherent to its particular nature—which make it always act or move after a determinate manner. The different principles of this motion are unknown to us, because we are in many instances, if not in all, ignorant of what constitutes the essence of beings. The elements of bodies escape our senses; we know them only in the mass: we are neither acquainted with their intimate combination, nor the proportion of these combinations; from whence must necessarily result their mode of action, their impulse, or their different effects. Our senses bring us generally acquainted with two sorts of motion in the beings that surround us: the one is the motion of the mass, by which an entire body is transferred from one place to another. Of the motion of this genus we are perfectly sensible.—Thus, we see a stone fall, a ball roll, an arm move, or change its position. The other is an internal or concealed motion, which always depends on the peculiar energies of a body: that is to say, on its essence, or the combination, the action, and re-action of the minute—of the insensible particles of matter, of which that body is composed. This motion we do not see; we know it only by the alteration or change, which after some time we discover in these bodies or mixtures. Of this genus is that concealed motion which fermentation produces in the particles that compose flour, which, however scattered, however separated, unite, and form that mass which we call BREAD. Such also is the imperceptible motion by which we see a plant or animal enlarge, strengthen, undergo changes, and acquire new qualities, without our eyes being competent to follow its progression, or to perceive the causes which have produced these effects. Such also is the internal motion that takes place in man, which is called his INTELLECTUAL FACULTIES, his THOUGHTS, his PASSIONS, his will. Of these we have no other mode of judging, than by their action; that is, by those sensible effects which either accompany or follow them. Thus, when we see a man run away, we judge him to be interiorly actuated by the passion of fear. Motion, whether visible or concealed, is styled ACQUIRED, when it is impressed on one body by another; either by a cause to which we are a stranger, or by an exterior agent which our senses enable us to discover. Thus we call that acquired motion, which the wind gives to the sails of a ship. That motion which is excited in a body, that contains within itself the causes of those changes we see it undergo, is called SPONTANEOUS. Then it is said, this body acts or moves by its own peculiar energies. Of this kind is the motion of the man who walks, who talks, who thinks. Nevertheless, if we examine the matter a little closer, we shall be convinced, that, strictly speaking, there is no such thing as spontaneous motion in any of the various bodies of Nature; seeing they are perpetually acting one upon the other; that all their changes are to be attributed to the causes, either visible or concealed, by which they are moved. The will of man is secretly moved or determined by some exterior cause that produces a change in him: we believe he moves of himself, because we neither see the cause that determined him, the mode in which it acted, nor the organ that it put in motion. That is called SIMPLE MOTION, which is excited in a body by a single cause. COMPOUND MOTION, that which is produced by two or more different causes; whether these causes are equal or unequal, conspiring differently, acting together or in succession, known or unknown. Let the motion of beings be of whatsoever nature it may, it is always the necessary consequence of their essence, or of the properties which compose them, and of those causes of which they experience the action. Each being can only move and act after a particular manner; that is to say, conformably to those laws which result from its peculiar essence, its particular combination, its individual nature: in short, from its specific energies, and those of the bodies from which it receives an impulse. It is this that constitutes the invariable laws of motion: I say invariable, because they can never change, without producing confusion in the essence of things. It is thus that a heavy body must necessarily fall, if it meets with no obstacle sufficient to arrest its descent; that a sensible body must naturally seek pleasure, and avoid pain; that fire must necessarily burn, and diffuse light. Each being, then, has laws of motion, that are adapted to itself, and constantly acts or moves according to these laws; at least when no superior cause interrupts its action. Thus, fire ceases to burn combustible matter, as soon as sufficient water is thrown into it, to arrest its progress. Thus, a sensible being ceases to seek pleasure, as soon as he fears that pain will be the result. The communication of motion, or the medium of action, from one body to another, also follows certain and necessary laws; one being can only communicate motion to another, by the affinity, by the resemblance, by the conformity, by the analogy, or by the point of contact, which it has with that other being. Fire can only propagate when it finds matter analogous to itself: it extinguishes when it encounters bodies which it cannot embrace; that is to say, that do not bear towards it a certain degree of relation or affinity. Every thing in the universe is in motion: the essence of matter is to act: if we consider its parts, attentively, we shall discover there is not a particle that enjoys absolute repose. Those which appear to us to be without motion, are, in fact, only in relative or apparent rest; they experience such an imperceptible motion, and expose it so little on their surfaces, that we cannot perceive the changes they undergo. All that appears to us to be at rest, does not, however, remain one instant in the same state. All beings are continually breeding, increasing, decreasing, or dispersing, with more or less dullness or rapidity. The insect called EPHEMERON, is produced and perishes in the same day; of consequence, it experiences the greatest changes of its being very rapidly, in our eyes. Those combinations which form the most solid bodies, which appear to enjoy the most perfect repose, are nevertheless decomposed, and dissolved in the course of time. The hardest stones, by degrees, give way to the contact of air. A mass of iron, which time, and the action of the atmosphere, has gnawed into rust, must have been in motion, from the moment of its formation, in the bowels of the earth, until the instant we behold it in this state of dissolution. Natural philosophers, for the most part, seem not to have sufficiently reflected on what they call the nisus; that is to say, the incessant efforts one body is making on another,...