The System of Nature, or, the Laws of the Moral and Physical World. Volume 2 — Key Ideas to Explore

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Holbach, Paul Henri Thiry, baron d', 1723-1789 Project Gutenberg 2005 Not confirmed
Philosophy and religion; Psychology; Materialism Readers of public-domain and historical texts
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Words 141,079
Reading time 614 min
Text sections 14

The catalog record for The System of Nature, or, the Laws of the Moral and Physical World. Volume 2 — Key Ideas to Explore provides practical reading context through 141,079 words, 10 hr 14 min estimated reading time, and 14 detected text sections.

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Holbach's materialist critique of religion examines how human fear and ignorance generate contradictory ideas of God, arguing that theological systems are irrational and harmful to morality and society.
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Such was the course of man's imagination, in the successive ideas which he either formed to himself, or which he received from his fathers, upon the divinity. The first theology of man was grounded on fear, modelled by ignorance: either afflicted or benefitted by the elements, he adored these elements themselves; by a parity of reasoning, if reasoning it can be called, he extended his reverence to every material, coarse object; he afterwards rendered his homage to the agents he supposed presiding over these elements; to powerful genii; to inferior genii; to heroes; to men endowed with either great or striking qualities. Time, aided by reflection, with here and there a slight corruscation of truth, induced him in some places to relinquish his original ideas; he believed he simplified the thing by lessening the number of his gods, but he achieved nothing by this towards attaining to the truth; in recurring from cause to cause man finished by losing sight of every thing; in this obscurity, in this dark abyss, his mind still laboured, he formed new chimeras, he made new gods, or rather he formed a very complex machinery; still, as before, whenever he could not account for any phenomenon that struck his sight, he was unwilling to ascribe it to physical causes; and the name of his Divinity, whatever that might happen to be, was always brought in to supply his own ignorance of natural causes.

If a faithful account was rendered of man's ideas upon the Divinity, he would be obliged to acknowledge, that for the most part the word _Gods_ has been used to express the concealed, remote, unknown causes of the effects he witnessed; that he applies this term when the spring of natural, the source of known causes ceases to be visible: as soon as he loses the thread of these causes, or as soon as his mind can no longer follow the chain, he solves the difficulty, terminates his research, by ascribing it to his gods; thus giving a vague definition to an unknown cause, at which either his idleness, or his limited knowledge, obliges him to stop. When, therefore, he ascribes to his gods the production of some phenomenon, the novelty or the extent of which strikes him with wonder, but of which his ignorance precludes him from unravelling the true cause, or which he believes the natural powers with which he is acquainted are inadequate to bring forth; does he, in fact, do any thing more than substitute for the darkness of his own mind, a sound to which he has been accustomed to listen with reverential awe? Ignorance may be said to be the inheritance of the generality of men; these attribute to their gods not only those uncommon effects that burst upon their senses with an astounding force, but also the most simple events, the causes of which are the most easy to be known to whoever shall be willing to meditate upon them. In short, man has always respected those unknown causes, those surprising effects which his ignorance prevented him from fathoming.

But does this afford us one single, correct idea of the _Divinity_? Can it be possible we are acting rationally, thus eternally to make him the agent of our stupidity, of our sloth, of our want of information on natural causes? Do we, in fact, pay any kind of adoration to this being, by thus bringing him forth on every trifling occasion, to solve the difficulties ignorance throws in our way? Of whatever nature this great cause of causes may be, it is evident to the slightest reflection that he has been sedulous to conceal himself from our view; that he has rendered it impossible for us to have the least acquaintance with him, except through the medium of nature, which he has unquestionably rendered competent to every thing: this is the rich banquet spread before man; he is invited to partake, with a welcome he has no right to dispute; to enjoy therefore is to obey; to be happy is to render that worship which must make him most acceptable; _to be happy himself is to make others happy; to make others happy is to be virtuous; to be virtuous he must revere truth: to know what truth is, he must examine with caution, scrutinize with severity, every opinion he adopts:_ this granted, is it at all consistent with the majesty of the Divinity, is it not insulting to such a being to clothe him with our wayward passions; to ascribe to him designs similar to our narrow view of things; to give him our filthy desires; to suppose he can be guided by our finite conceptions; to bring him on a level with frail humanity, by investing him with our qualities, however much we may exaggerate them; to indulge an opinion that he can either act or think as we do; to imagine he can in any manner resemble such a feeble play-thing, as is the greatest, the most distinguished man? No! it is to degrade him in the eye of reason; to violate every regard for truth; to set moral decency at defiance; to fall back into the depth of cimmerian darkness. Let man therefore sit down cheerfully to the feast; let him contentedly partake of what he finds; but let him not worry the Divinity with his useless prayers, with his shallow-sighted requests, to solicit at his hands that which, if granted, would in all probability be the most injurious for himself; these supplications are, in fact, at once to say, that with our limited experience, with our slender knowledge, we better understand what is suitable to our condition, what is convenient to our welfare, than the mighty _Cause of all causes_ who has left us in the hands of nature: it is to be presumptuous in the highest degree of presumption; it is impiously to endeavour to lift up a veil which it is evidently forbidden man to touch; that even his most strenuous efforts attempt in vain.

It remains, then, to inquire, if man can reasonably flatter himself with obtaining a perfect knowledge of the power of nature; of the properties of the beings she contains; of the effects which may result from their various combinations? Do we know why the magnet attracts iron? Are we better acquainted with the cause of polar attraction? Are we in a condition to explain the phenomena of light, electricity, elasticity? Do we understand the mechanism by which that modification of our brain, which we tall volition, puts our arm or our legs into motion? Can we render to ourselves an account of the manner in which our eyes behold objects, in which our ears receive sounds, in which our mind conceives ideas? All we know upon these subjects is, that they are so. If then we are incapable of accounting for the most ordinary phenomena, which nature daily exhibits to us, by what chain of reasoning do we refuse to her the power of producing other effects equally incomprehensible to us? Shall we be more instructed, when every time we behold an effect of which we are not in a capacity to develope the cause, we may idly say, this effect is produced by the power, by the will of God? Undoubtedly it is the great _Cause of causes_ must have produced every thing; but is it not lessening the true dignity of the Divinity, to introduce him as interfering in every operation of nature; nay, in every action of so insignificant a creature as man? As a mere agent executing his own eternal, immutable laws; when experience, when reflection, when the evidence of all we contemplate, warrants the idea, that this ineffable being has rendered nature competent to every effect, by giving her those irrevocable laws, that eternal, unchangeable system, according to which all the beings she contains must eternally act? Is it not more worthy the exalted mind of the GREAT PARENT OF PARENTS, _ens entium_, more consistent with truth, to suppose that his wisdom in giving these immutable, these eternal laws to the macrocosm, foresaw every thing that could possibly be requisite for the happiness of the beings contained in it; that therefore he left it to the invariable operation of a system, which never can produce any effect that is not the best possible that circumstances however viewed will admit: that consequently the natural activity of the human mind, which is itself the result of this eternal action, was purposely given to man, that he might endeavour to fathom, that he might strive to unravel, that he might seek out the concatenation of these laws, in order to furnish remedies against the evils produced by ignorance. How many discoveries in the great science of natural philosophy has mankind progressively made, which the ignorant prejudices of our forefathers on their first announcement considered as impious, as displeasing to the Divinity, as heretical profanations, which could only be expiated by the sacrifice of the enquiring individuals; to whose labour their posterity owes such an infinity of gratitude? Even in modern days we have seen a SOCRATES destroyed, a GALLILEO condemned, whilst multitudes of other benefactors to mankind have been held in contempt by their uninformed cotemporaries, for those very researches into nature which the present generation hold in the highest veneration. _Whenever ignorant priests are permitted to guide the opinions of nations, science can make but a very slender progress:_ natural discoveries will be always held inimical to the interest of bigotted superstitious men. It may, to the minds of infatuated mortals, to the shallow comprehension of prejudiced beings, appear very pious to reply on every occasion our gods do this, our gods do that; but to the contemplative philosopher, to the man of reason, to the real adorers of the great _Cause of causes_, it will never be convincing, that a sound, a mere word, can attach the reason of things; can have more than a fixed sense; can suffice to explain problems. The word GOD is for the most part used to denote the impenetrable cause of those effects which astonish mankind; which man is not competent to explain. But is not this wilful idleness? Is it not inconsistent with our nature? Is it not being truly impious, to sit down with those fine faculties we have received, and give the answer of a child to every thing we do not understand; or rather which our own sloth, or our own want of industry has prevented us from knowing? Ought we not rather to redouble our efforts to penetrate the cause of those phenomena which strike our mind? Is not this, in fact, the duty we owe to the great, the universal Parent? When we have given this answer, what have we said? nothing but what every one knows. Could the great _Cause of causes_ make the whole, without also making its part? But does it of necessity follow that he executes every trifling operation, when he has so noble an agent as his own nature, whose laws he has rendered unchangeable, whose scale of operations can never deviate from the eternal routine he has marked out for her and all the beings she embraces? Whose secrets, if sought out, contain the true balsam of life--the sovereign remedy for all the diseases of man.

When we shall be ingenuous with ourselves, we shall be obliged to agree that it was uniformly the ignorance in which our ancestors were involved, their want of knowledge of natural causes, their unenlightened ideas on the powers of nature, which gave birth to the gods they worshipped; that it is, again, the impossibility which the greater part of mankind find to withdraw, themselves out of this ignorance, the difficulty they consequently find to form to themselves simple ideas of the formation of things, the labour that is required to discover the true sources of those events, which they either admire or fear, that makes them believe these ideas are necessary to enable them to render an account of those phenomena, to which their own sluggishness renders them incompetent to recur. Here, without doubt, is the reason they treat all those as irrational who do not see the necessity of admitting an unknown agent, or some secret energy, which for want of being acquainted with Nature, they have placed out of herself.

The phenomena of nature necessarily breed various sentiments in man: some he thinks favorable to him, some prejudicial, while the whole is only what it can be. Some excite his love, his admiration, his gratitude; others fill him with trouble, cause aversion, drive him to despair. According to the various sensations he experiences, he either loves or fears the causes to which he attributes the effects, which produce in him these different passions: these sentiments are commensurate with the effects he experiences; his admiration is enhanced, his fears are augmented, in the same ratio as the phenomena which strikes his senses are more or less extensive, more or less irresistible or interesting to him. Man necessarily makes himself the centre of nature; indeed he can only judge of things, as he is himself affected by them; he can only love that which he thinks favorable to his being; he hates, he fears every thing which causes him to suffer: in short, as we have seen in the former volume, he calls confusion every thing that deranges the economy of his machine; he believes all is in order, as soon as he experiences nothing but what is suitable to his peculiar mode of existence. By a necessary consequence of these ideas, man firmly believes that the entire of nature was made for him alone; that it was only himself which she had in view in all her works; or rather that the powerful cause to which this nature was subordinate, had only for object man and his convenience, in all the stupendous effects which are produced in the universe.

If there existed on this earth other thinking beings besides man, they would fall exactly into similar prejudices with himself; it is a sentiment founded upon that predilection which each individual necessarily has for himself; a predilection that will subsist until reason, aided by experience, in pointing out the truth, shall have rectified his errors.

Thus, whenever man is contented, whenever every thing is in order with respect to himself, he either admires or loves the causes to which he believes he is indebted for his welfare; when he becomes discontented with his mode of existence, he either fears or hates the cause which he supposes has produced these afflicting effects. But his welfare confounds itself with his existence; it ceases to make itself felt when it has become habitual, when it has been of long continuance; he then thinks it is inherrent to his essence; he concludes from it that he is formed to be always happy; he finds it natural that every thing should concur to the maintenance of his being. It is by no means the same when he experiences a mode of existence that is displeasing to himself: the man who suffers is quite astonished at the change which his taken place in his machine; he judges it to be contrary to the entire of nature, because it is incommodious to his own particular nature; he, imagines those events by which he is wounded, to be contrary to the order of things; he believes that nature is deranged every time she does not procure for him that mode of feeling which is suitable to his ideas: he concludes from these suppositions that nature, or rather that the agent who moves her; is irritated against him.

It is thus that man, almost insensible to good, feels evil in a very lively manner; the first he believes natural, the other he thinks opposed to nature. He is either ignorant, or forgets, that he constitutes part of a whole, formed by the assemblage of substances, of which some are analogous, others heterogeneous; that the various beings of which nature is composed, are endowed with a variety of properties, by virtue of which they act diversely on the bodies who find themselves within the sphere of their action; that some have an aptitude to attraction, whilst it is of the essence of others to repel; that even those bodies that attract at one distance, repel at another; that the peculiar attractions and repulsions of the particles of bodies perpetually oppose, invariably counteract the general ones of the masses of matter: he does not perceive that these beings, as destitute of goodness, as devoid of malice, act only according to their respective essences; follow the laws their properties impose upon them; without being in capacity to act otherwise than they do. It is, therefore, for want of being acquainted with these things, that he looks upon the great Author of nature, the great _Cause of causes_, as the immediate cause of those evils to which he is submitted; that he judges erroneously when he imagines that the Divinity is exasperated against him.

The fact is, man believes that his welfare is a debt due to him from nature; that when he suffers evil she does him an injustice; fully persuaded that this nature was made solely for himself, he cannot conceive she would make him, who is her lord paramount, suffer, if she was not moved thereto by a power who is inimical to his happiness; who has reasons with which he is unacquainted for afflicting, who has motives which he wishes to discover, for punishing him. From hence it will be obvious, that evil, much more than good, is the true motive of those researches which man has made concerning the Divinity--of those ideas which he has formed to himself--of the conduct he has held towards him. The admiration of the works of nature, or the acknowledgement of its goodness, seem never alone to have determined the human species to recur painfully by thought to the source of these things; familiarized at once with all those effects which are favourable to his existence, he does not by any means give himself the same trouble to seek the causes, that he does to discover those which disquiet him, or by which he is afflicted. Thus, in reflecting upon the Divinity, it was generally upon the cause of his evils that man meditated; his meditations were fruitless, because the evil he experiences, as well as the good he partakes, are equally necessary effects of natural causes, to which his mind ought rather to have bent its force, than to have invented fictitious causes of which he never could form to himself any but false ideas; seeing that he always borrowed them, from his own peculiar mariner of existing, acting, and feeling. Obstinately refusing to see any thing, but himself, he never became acquainted with that universal nature of which he constitutes such a very feeble part.

In The System of Nature, Volume 2, Paul Henri Thiry, Baron d'Holbach, extends his materialist philosophy to a systematic dismantling of religious belief. Writing under the pseudonym Mirabaud, he argues that human ideas of the divine originate not from revelation but from fear, ignorance, and the misapplication of imagination. The text is structured as a series of chapters that examine theological proofs, the attributes of God, and the social consequences of religious belief. Holbach's prose is relentlessly logical, often employing a cumulative, enumerative style to drive home his points. He frequently contrasts the variability of religious opinions with the uniformity of natural law, insisting that only empirical evidence and reason can lead to genuine knowledge.

The Rhetoric of Dismantling

Holbach's argumentative strategy relies on a distinctive rhetorical pattern: he first presents a theological claim, then exposes its internal contradictions, and finally attributes its persistence to psychological or social causes. For instance, he writes that religious opinions are held as sacred because they are 'deeply engraven on his brain' from childhood, not because they are true. This move from critique to etiology recurs throughout the volume. His diction is often caustic: he refers to theologians as 'idle dreamers nourished with bile' and 'atrabilarians' whose melancholic humour disposes them to wickedness. Such language is not mere invective but serves to pathologize religious belief, framing it as a disorder of the imagination rather than a rational system.

Variability as Evidence of Error

A central argument in Holbach's critique is that the diversity of religious opinions proves their falsity. He observes that theological ideas 'have never been uniform—never assimilated in any two countries—never borne the same features in any two ages.' This variability, he contends, is incompatible with the notion of a single, unchanging divine truth. Instead, it reflects the 'diversity of temperament, arising from variety of organization' and the 'contrariety of passions' shaped by circumstance. By grounding belief in physiology and environment, Holbach reduces theology to a product of material causes. He extends this logic to moral behavior, arguing that religious ethics are inherently unstable because they depend on the whims of 'implacable priests' and 'blind zealots' rather than on universal natural laws.

The Social Consequences of Superstition

Holbach devotes considerable attention to the practical harms of religious belief, cataloguing atrocities committed in the name of piety. He lists 'parents have immolated their children; lovers have sacrificed the objects of their affection; friends have destroyed each other' as examples of the 'most atrocious cruelties' justified by public worship. The passage builds through anaphora and escalating horror, culminating in the image of 'the multitudinous victims to mad-brained error.' For Holbach, these consequences are not accidental but inevitable: once man 'renounces the evidence of his senses' and 'quits the road of experience,' there is no limit to the mischief that follows. His argument here is both moral and epistemological—false premises necessarily lead to disastrous outcomes.

Materialism as the Foundation of Morality

In the later chapters, Holbach proposes that a stable morality must be based on nature and reason, not on theological dogma. He argues that 'theological notions cannot be the basis of morality' because they are contradictory and changeable. Instead, he advocates for a 'natural morality' grounded in the physical and psychological constitution of human beings. The text's final chapter, 'A summary of the Code of Nature,' attempts to outline such a system, though the excerpts provided do not include its details. Holbach's method throughout is to clear away superstition so that a rational ethics can emerge. His tone becomes almost exhortatory when he insists that man must 'recur to the source of those opinions' and render 'a faithful account' of his reasons—a call to intellectual self-examination that echoes Enlightenment ideals.

Readers approaching this volume should be prepared for a dense, polemical work that proceeds by logical argument and rhetorical accumulation. Holbach's prose demands attention to his chains of reasoning and his use of vivid, sometimes shocking examples. The text is best read as a philosophical treatise rather than a historical document, though its place in the French Enlightenment is significant. Those interested in the intersection of materialism, ethics, and religion will find here a rigorous, if uncompromising, statement of atheist humanism.

There’s something almost tender in how Holbach traces our fears into gods, then watches those gods harden into laws. It leaves me feeling that the clearest thinking often begins in honesty about our own trembling. That same sober, unsentimental care surfaces later in The English Utilitarians, Volume 2 (of 3) James Mill — Text and Context, where practical ethics quietly replaces old certainties—not loudly, just patiently, the way one sets down a heavy stone.

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