# 4.1: Determinism

$$\newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}} }$$

$$\newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash {#1}}}$$

$$\newcommand{\id}{\mathrm{id}}$$ $$\newcommand{\Span}{\mathrm{span}}$$

( \newcommand{\kernel}{\mathrm{null}\,}\) $$\newcommand{\range}{\mathrm{range}\,}$$

$$\newcommand{\RealPart}{\mathrm{Re}}$$ $$\newcommand{\ImaginaryPart}{\mathrm{Im}}$$

$$\newcommand{\Argument}{\mathrm{Arg}}$$ $$\newcommand{\norm}[1]{\| #1 \|}$$

$$\newcommand{\inner}[2]{\langle #1, #2 \rangle}$$

$$\newcommand{\Span}{\mathrm{span}}$$

$$\newcommand{\id}{\mathrm{id}}$$

$$\newcommand{\Span}{\mathrm{span}}$$

$$\newcommand{\kernel}{\mathrm{null}\,}$$

$$\newcommand{\range}{\mathrm{range}\,}$$

$$\newcommand{\RealPart}{\mathrm{Re}}$$

$$\newcommand{\ImaginaryPart}{\mathrm{Im}}$$

$$\newcommand{\Argument}{\mathrm{Arg}}$$

$$\newcommand{\norm}[1]{\| #1 \|}$$

$$\newcommand{\inner}[2]{\langle #1, #2 \rangle}$$

$$\newcommand{\Span}{\mathrm{span}}$$ $$\newcommand{\AA}{\unicode[.8,0]{x212B}}$$

$$\newcommand{\vectorA}[1]{\vec{#1}} % arrow$$

$$\newcommand{\vectorAt}[1]{\vec{\text{#1}}} % arrow$$

$$\newcommand{\vectorB}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}} }$$

$$\newcommand{\vectorC}[1]{\textbf{#1}}$$

$$\newcommand{\vectorD}[1]{\overrightarrow{#1}}$$

$$\newcommand{\vectorDt}[1]{\overrightarrow{\text{#1}}}$$

$$\newcommand{\vectE}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash{\mathbf {#1}}}}$$

$$\newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}} }$$

$$\newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash {#1}}}$$

$$\newcommand{\avec}{\mathbf a}$$ $$\newcommand{\bvec}{\mathbf b}$$ $$\newcommand{\cvec}{\mathbf c}$$ $$\newcommand{\dvec}{\mathbf d}$$ $$\newcommand{\dtil}{\widetilde{\mathbf d}}$$ $$\newcommand{\evec}{\mathbf e}$$ $$\newcommand{\fvec}{\mathbf f}$$ $$\newcommand{\nvec}{\mathbf n}$$ $$\newcommand{\pvec}{\mathbf p}$$ $$\newcommand{\qvec}{\mathbf q}$$ $$\newcommand{\svec}{\mathbf s}$$ $$\newcommand{\tvec}{\mathbf t}$$ $$\newcommand{\uvec}{\mathbf u}$$ $$\newcommand{\vvec}{\mathbf v}$$ $$\newcommand{\wvec}{\mathbf w}$$ $$\newcommand{\xvec}{\mathbf x}$$ $$\newcommand{\yvec}{\mathbf y}$$ $$\newcommand{\zvec}{\mathbf z}$$ $$\newcommand{\rvec}{\mathbf r}$$ $$\newcommand{\mvec}{\mathbf m}$$ $$\newcommand{\zerovec}{\mathbf 0}$$ $$\newcommand{\onevec}{\mathbf 1}$$ $$\newcommand{\real}{\mathbb R}$$ $$\newcommand{\twovec}[2]{\left[\begin{array}{r}#1 \\ #2 \end{array}\right]}$$ $$\newcommand{\ctwovec}[2]{\left[\begin{array}{c}#1 \\ #2 \end{array}\right]}$$ $$\newcommand{\threevec}[3]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \end{array}\right]}$$ $$\newcommand{\cthreevec}[3]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \end{array}\right]}$$ $$\newcommand{\fourvec}[4]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \\ #4 \end{array}\right]}$$ $$\newcommand{\cfourvec}[4]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \\ #4 \end{array}\right]}$$ $$\newcommand{\fivevec}[5]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \\ #4 \\ #5 \\ \end{array}\right]}$$ $$\newcommand{\cfivevec}[5]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \\ #4 \\ #5 \\ \end{array}\right]}$$ $$\newcommand{\mattwo}[4]{\left[\begin{array}{rr}#1 \amp #2 \\ #3 \amp #4 \\ \end{array}\right]}$$ $$\newcommand{\laspan}[1]{\text{Span}\{#1\}}$$ $$\newcommand{\bcal}{\cal B}$$ $$\newcommand{\ccal}{\cal C}$$ $$\newcommand{\scal}{\cal S}$$ $$\newcommand{\wcal}{\cal W}$$ $$\newcommand{\ecal}{\cal E}$$ $$\newcommand{\coords}[2]{\left\{#1\right\}_{#2}}$$ $$\newcommand{\gray}[1]{\color{gray}{#1}}$$ $$\newcommand{\lgray}[1]{\color{lightgray}{#1}}$$ $$\newcommand{\rank}{\operatorname{rank}}$$ $$\newcommand{\row}{\text{Row}}$$ $$\newcommand{\col}{\text{Col}}$$ $$\renewcommand{\row}{\text{Row}}$$ $$\newcommand{\nul}{\text{Nul}}$$ $$\newcommand{\var}{\text{Var}}$$ $$\newcommand{\corr}{\text{corr}}$$ $$\newcommand{\len}[1]{\left|#1\right|}$$ $$\newcommand{\bbar}{\overline{\bvec}}$$ $$\newcommand{\bhat}{\widehat{\bvec}}$$ $$\newcommand{\bperp}{\bvec^\perp}$$ $$\newcommand{\xhat}{\widehat{\xvec}}$$ $$\newcommand{\vhat}{\widehat{\vvec}}$$ $$\newcommand{\uhat}{\widehat{\uvec}}$$ $$\newcommand{\what}{\widehat{\wvec}}$$ $$\newcommand{\Sighat}{\widehat{\Sigma}}$$ $$\newcommand{\lt}{<}$$ $$\newcommand{\gt}{>}$$ $$\newcommand{\amp}{&}$$ $$\definecolor{fillinmathshade}{gray}{0.9}$$

It has been already sufficiently proved, that the soul is nothing more than the body, considered relatively to some of its functions, more concealed than others: it has been shewn, that this soul, even when it shall be supposed immaterial, is continually modified conjointly with the body; is submitted to all its motion; that without this it would remain inert and dead: that, consequently, it is subjected to the influence of those material, to the operation those physical causes, which give impulse to the body; of which the mode of existence, whether habitual or transitory, depends upon the material elements by which it is surrounded; that form its texture; that constitute its temperament; that enter into it by the means of the aliments; that penetrate it by their subtility; the faculties which are called intellectual, and those qualities which are styled moral, have been explained in a manner purely physical; entirely natural: in the last place, it has been demonstrated, that all the ideas, all the systems, all the affections, all the opinions, whether true or false, which man forms to himself, are to be attributed to his physical powers; are to be ascribed to his material senses. Thus man is a being purely physical; in whatever manner he is considered, he is connected to universal Nature: submitted to the necessary, to the immutable laws that she imposes on all the beings she contains, according to their peculiar essences; conformable to the respective properties with which, without consulting them, she endows each particular species. Man's life is a line that Nature commands him to describe upon the surface of the earth: without his ever being able to swerve from it even for an instant. He is born without his own consent; his organizations does in no wise depend upon himself; his ideas come to him involuntarily; his habits are in the power of those who cause him to contract them; he is unceasingly modified by causes, whether visible or concealed, over which he has no controul; give the hue to his way of thinking, and determine his manner of acting. He is good or bad—happy or miserable—wise or foolish—reasonable or irrational, without his will going for anything in these various states. Nevertheless, in despite of the shackles by which he is bound, it is pretended he is a free agent, or that independent of the causes by which he is moved, he determines his own will; regulates his own condition.

However slender the foundation of this opinion, of which every thing ought to point out to him the error; it is current at this day for an incontestible truth, and believed enlightened; it is the basis or religion, which has been incapable of imagining how man could either merit reward or deserve punishment if he was not a free agent. Society has been believed interested in this system, because an idea has gone abroad, that if all the actions of man were to be contemplated as necessary, the right of punishing those who injure their associates would no longer exist. At length human vanity accommodated itself to an hypothesis which, unquestionable, appears to distinguish man from all other physical beings, by assigning to him the special privilege of a total independence of all other causes; but of which a very little reflection would have shewn him the absurdity or even the impossibility. …

The will, as we have elsewhere said, is a modification of the brain, by which it is disposed to action or prepared to give play to the organs. This will is necessarily determined by the qualities, good or bad, agreeable or painful, of the object or the motive that acts upon his senses; or of which the idea remains with him, and is resuscitated by his memory. In consequence, he acts necessarily; his action is the result of the impulse he receives either from the motive, from the object, or from the idea, which has modified his brain, or disposed his will. When he does not act according to this impulse, it is because there comes some new cause, some new motive, some new idea, which modifies his brain in a different manner, gives him a new impulse, determines his will in another way; by which the action of the former impulse is suspended: thus, the sight of an agreeable object, or its idea, determines his will to set him in action to procure it; but if a new object or a new idea more powerfully attracts him, it gives a new direction to his will, annihilates the effect of the former, and prevents the action by which it was to be procured. This is the mode in which reflection, experience, reason, necessarily arrests or suspends the action of man's will; without this, he would, of necessity, have followed the anterior impulse which carried him towards a then desirable object. In all this he always acts according to necessary laws, from which he has no means of emancipating himself.

If, when tormented with violent thirst, he figures to himself an idea, or really perceives a fountain, whose limpid streams might cool his feverish habit, is he sufficient master of himself to desire or not to desire the object competent to satisfy so lively a want? It will no doubt be conceded, that it is impossible he should not be desirous to satisfy it; but it will be said,—If at this moment it is announced to him, the water he so ardently desires is poisoned, he will, notwithstanding his vehement thirst, abstain from drinking it; and it has, therefore, been falsely concluded that he is a free agent. The fact, however, is, that the motive in either case is exactly the same: his own conservation. The same necessity that determined him to drink, before he knew the water was deleterious, upon this new discovery, equally determines him not to drink; the desire of conserving himself, either annihilates or suspends the former impulse; the second motive becomes stronger than the preceding; that is, the fear of death, or the desire of preserving himself, necessarily prevails over the painful sensation caused by his eagerness to drink. But, (it will be said) if the thirst is very parching, an inconsiderate man, without regarding the danger, will risque swallowing the water. Nothing is gained by this remark: in this case, the anterior impulse only regains the ascendency; he is persuaded, that life may possibly be longer preserved, or that he shall derive a greater good by drinking the poisoned water, than by enduring the torment, which, to his mind, threatens instant dissolution: thus, the first becomes the strongest, and necessarily urges him on to action. Nevertheless, in either case, whether he partakes of the water, or whether he does not, the two actions will be equally necessary; they will be the effect of that motive which finds itself most puissant; which consequently acts in a most coercive manner upon his will.

This example will serve to explain the whole phaenomena of the human will. This will, or rather the brain, finds itself in the same situation as a bowl, which although it has received an impulse that drives it forward in a straight line, is deranged in its course, whenever a force, superior to the first, obliges it to change its direction. The man who drinks the poisoned water, appears a madman; but the actions of fools are as necessary as those of the most prudent individuals. The motives that determine the voluptuary, that actuate the debauchee to risk their health, are as powerful, their actions are as necessary, as those which decide the wise man to manage his. But, it will be insisted, the debauchee may be prevailed on to change his conduct; this does not imply that he is a free agent; but, that motives may be found sufficiently powerful to annihilate the effect of those that previously acted upon him; then these new motives determine his will to the new mode of conduct he may adopt, as necessarily as the former did to the old mode. …

Choice by no means proves the free-agency of man; he only deliberates when he does not yet know which to choose of the many objects that move him, he is then in an embarrassment, which does not terminate, until his will as decided by the greater advantage he believes be shall find in the object he chooses, or the action he undertakes. From whence it may be seen that choice is necessary, because he would not determine for an object, or for an action, if he did not believe that he should find in it some direct advantage. That man should have free-agency, it were needful that he should be able to will or choose without motive; or, that he could prevent motives coercing his will. Action always being the effect of his will once determined, as his will cannot be determined but by a motive, which is not in his own power, it follows that he is never the master of the determination of his own peculiar will; that consequently he never acts as a free agent. It has been believed that man was a free agent, because he had a will with the power of choosing; but attention has not been paid to the fact, that even his will is moved by causes independent of himself, is owing to that which is inherent in his own organization, or which belongs to the nature of the beings acting on him. Indeed, man passes a great portion of his life without even willing. His will attends the motive by which it is determined. If he was to render an exact account of every thing he does in the course of each day, from rising in the morning to lying down at night, he would find, that not one of his actions have been in the least voluntary; that they have been mechanical, habitual, determined by causes he was not able to foresee, to which he was either obliged to, yield, or with which he was allured to acquiesce; he would discover, that all the motives of his labours, of his amusements, of his discourses, of his thoughts, have been necessary; that they have evidently either seduced him or drawn him along. Is he the master of willing, not to withdraw his hand from the fire when he fears it will be burnt? Or has he the power to take away from fire the property which makes him fear it? Is he the master of not choosing a dish of meat which he knows to be agreeable, or analogous to his palate; of not preferring it to that which he knows to be disagreeable or dangerous? It is always according to his sensations, to his own peculiar experience, or to his suppositions, that he judges of things either well or ill; but whatever way be his judgment, it depends necessarily on his mode of feeling, whether habitual or accidental, and the qualities he finds in the causes that move him, which exist in despite of himself.

All the causes which by his will is actuated, must act upon him in a manner sufficiently marked, to give him some sensation, some perception, some idea, whether complete or incomplete, true or false; as soon as his will is determined, he must have felt, either strongly or feebly; if this was not the case he would have determined without motive: thus, to speak correctly, there are no causes which are truly indifferent to the will: however faint the impulse he receives, whether on the part of the objects themselves, or on the part of their images or ideas, as soon as his will acts, the impulse has been competent to determine him. In consequence of a slight, of a feeble impulse, the will is weak, it is this weakness of the will that is called indifference. His brain with difficulty perceives the sensation, it has received; it consequently acts with less vigour, either to obtain or remove the object or the idea that has modified it. If the impulse is powerful, the will is strong, it makes him act vigorously, to obtain or to remove the object which appears to him either very agreeable or very incommodious.

It has been believed man was a free agent, because it has been imagined that his soul could at will recall ideas, which sometimes suffice to check his most unruly desires. Thus, the idea of a remote evil frequently prevents him from enjoying a present and actual good: thus, remembrance, which is an almost insensible, a slight modification of his brain, annihilates, at each instant, the real objects that act upon his will. But he is not master of recalling to himself his ideas at pleasure; their association is independent of him; they are arranged in his brain, in despite of him, without his own knowledge, where they have made an impression more or less profound; his memory itself depends upon his organization; its fidelity depends upon the habitual or momentary state in which he finds himself; when his will is vigorously determined to some object or idea that excites a very lively passion in him, those objects or ideas that would be able to arrest his action no longer present themselves to his mind; in those moments his eyes are shut to the dangers that menace him, of which the idea ought to make him forbear; he marches forward headlong towards the object by whose image he is hurried on; reflection cannot operate upon him in any way; he sees nothing but the object of his desires; the salutary ideas which might be able to arrest his progress disappear, or else display themselves either too faintly or too late to prevent his acting. Such is the case with all those who, blinded by some strong passion, are not in a condition to recal to themselves those motives, of which the idea alone, in cooler moments, would be sufficient to deter them from proceeding; the disorder in which they are, prevents their judging soundly; render them incapable of foreseeing the consequence of their actions; precludes them from applying to their experience; from making use of their reason; natural operations, which suppose a justness in the manner of associating their ideas; but to which their brain is then not more competent, in consequence of the momentary delirium it suffers, than their hand is to write whilst they are taking violent exercise.

Man's mode of thinking is necessarily determined by his manner of being; it must, therefore, depend on his natural organization, and the modification his system receives independently of his will. From this we are obliged to conclude, that his thoughts, his reflections, his manner of viewing things, of feeling, of judging, of combining ideas, is neither voluntary nor free. In a word, that his soul is neither mistress of the motion excited in it, nor of representing to itself, when wanted, those images or ideas that are capable of counterbalancing the impulse it receives. This is the reason why man, when in a passion, ceases to reason; at that moment reason is as impossible to be heard, as it is during an extacy, or in a fit of drunkenness. The wicked are never more than men who are either drunk or mad: if they reason, it is not until tranquillity is re-established in their machine; then, and not till then, the tardy ideas that present themselves to their mind, enable them to see the consequence of their actions, and give birth to ideas, that bring on them that trouble, which is designated shame, regret, remorse.

The errors of philosophers on the free-agency of man, have arisen from their regarding his will as the primum mobile, the original motive of his actions; for want of recurring back, they have not perceived the multiplied, the complicated causes, which, independently of him, give motion to the will itself, or which dispose and modify his brain, whilst he himself is purely passive in the motion he receives. Is he the master of desiring or not desiring an object that appears desirable to him? Without doubt it will be answered, No: but he is the master of resisting his desire, if he reflects on the consequences. But, I ask, is he capable of reflecting on these consequences when his soul is hurried along by a very lively passion, which entirely depends upon his natural organization, and the causes by which he is modified? Is it in his power to add to these consequences all the weight necessary to counterbalance his desire? Is he the master of preventing the qualities which render an object desirable from residing in it? I shall be told, he ought to have learned to resist his passions; to contract a habit of putting a curb on his desires. I agree to it without any difficulty: but in reply, I again ask, Is his nature susceptible of this modification? Does his boiling blood, his unruly imagination, the igneous fluid that circulates in his veins, permit him to make, enable him to apply true experience in the moment when it is wanted? And, even when his temperament has capacitated him, has his education, the examples set before him, the ideas with which he has been inspired in early life, been suitable to make him contract this habit of repressing his desires? Have not all these things rather contributed to induce him to seek with avidity, to make him actually desire those objects which you say he ought to resist. ...

In short, the actions of man are never free; they are always the necessary consequence of his temperament, of the received ideas, of the notions, either true or false, which he has formed to himself of happiness: of his opinions, strengthened by example, forfeited by education, consolidated by daily experience. So many crimes are witnessed on the earth, only because every thing conspires to render man vicious, to make him criminal; very frequently, the superstitions he has adopted, his government, his education, the examples set before him, irresistibly drive him on to evil: under these circumstances morality preaches virtue to him in vain. In those societies where vice is esteemed, where crime is crowned, where venality is constantly recompenced, where the most dreadful disorders are punished, only in those who are too weak to enjoy the privilege of committing them with impunity; the practice of virtue is considered nothing more than a painful sacrifice of fancied happiness. Such societies chastise, in the lower orders, those excesses which they respect in the higher ranks; and frequently have the injustice to condemn those in penalty of death, whom public prejudices, maintained by constant example, have rendered criminal.

Man, then, is not a free agent in any one instant of his life; he is necessarily guided in each step by those advantages, whether real or fictitious, that he attaches to the objects by which his passions are roused: these passions themselves are necessary in a being who, unceasingly tends towards his own happiness; their energy is necessary, since that depends on his temperament; his temperament is necessary, because it depends on the physical elements which enter into his composition; the modification of this temperament is necessary, as it is the infallible result, the inevitable consequence of the impulse he receives from the incessant action of moral and physical beings.

1. In despite of these proofs of the want of free-agency in man, so clear to unprejudiced minds, it will, perhaps, be insisted upon with no small feeling of triumph, that if it be proposed to any one to move or not to move his hand, an action in the number of those called indifferent, he evidently appears to be the master of choosing; from which it is concluded, evidence has been offered of his free-agency. The reply is, this example is perfectly simple; man in performing some action which he is resolved on doing, does not by any means prove his free-agency: the very desire of displaying this quality, excited by the dispute, becomes a necessary motive which decides his will either for the one or the other of these actions: what deludes him in this instance, or that which persuades him he is a free agent at this moment, is, that he does not discern the true motive which sets him in action; which is neither more nor less than the desire of convincing his opponent: if in the heat of the dispute he insists and asks, "Am I not the master of throwing myself out of the window?" I shall answer him, no; that whilst he preserves his reason, there is not even a probability that the desire of proving his free-agency, will become a motive sufficiently powerful, to make him sacrifice his life to the attempt; if, notwithstanding this, to prove he is a free agent, he should actually precipitate himself from the window, it would not be a sufficient warrantry to conclude he acted freely, but rather that it was the violence of his temperament which spurred him on to this folly. Madness is a state that depends upon the heat of the blood, not upon the will. A fanatic or a hero, braves death as necessarily as a more phlegmatic man or a coward flies from it. There is, in point of fact, no difference between the man who is cast out of the window by another, and the man who throws himself out of it, except that the impulse in the first instance comes immediately from without, whilst that which determines the fall in the second case, springs from within his own peculiar machine, having its more remote cause also exterior. When Mutius Scaevola held his hand in the fire, he was as much acting under the influence of necessity, caused by interior motives, that urged him to this strange action, as if his arm had been held by strong men; pride, despair, the desire of braving his enemy, a wish to astonish him, an anxiety to intimidate him, &c. were the invisible chains that held his hand bound to the fire. The love of glory, enthusiasm for their country, in like manner, caused Codrus and Decius to devote themselves for their fellow citizens. The Indian Calanus and the philosopher Peregrinus were equally obliged to burn themselves, by the desire of exciting the astonishment of the Grecian assembly.

It is said that free-agency is the absence of those obstacles competent to oppose themselves to the actions of man, or to the exercise of his faculties: it is pretended that he is a free agent, whenever, making use of these faculties, he produces the effect he has proposed to himself. In reply to this reasoning, it is sufficient to consider that it in no wise depends upon himself to place or remove the obstacles that either determine or resist him; the motive that causes his action is no more in his own power than the obstacle that impedes him, whether this obstacle or motive be within his own machine or exterior of his person: he is not master of the thought presented to his mind which determines his will; this thought is excited by some cause independent of himself.

To be undeceived on the system of his free-agency, man has simply to recur to the motive by which his will is determined, he will always find this motive is out of his own controul. It is said, that in consequence of an idea to which the mind gives birth, man acts freely if he encounters no obstacle. But the question is, what gives birth to this idea in his brain? has he the power either to prevent it from presenting itself, or from renewing itself in his brain? Does not this idea depend either upon objects that strike him exteriorly and in despite of himself, or upon causes that without his knowledge act within himself and modify his brain? Can he prevent his eyes, cast without design upon any object whatever, from giving him an idea of this object, from moving his brain? He is not more master of the obstacles; they are the necessary effects of either interior or exterior causes, which always act according to their given properties. A man insults a coward, who is necessarily irritated against his insulter, but his will cannot vanquish the obstacle that cowardice places to the object of his desire, which is, to resent the insult; because his natural conformation, which does not depend upon himself, prevents his having courage. In this case the coward is insulted in despite of himself, and against his will is obliged patiently to brook the insult he has received.

2. The partizans of the system of free-agency appear ever to have confounded constraint with necessity. Man believes he acts as a free agent, every time he does not see any thing that places obstacles to his actions; he does not perceive that the motive which causes him to will is always necessary, is ever independent of himself. A prisoner loaded with chains is compelled to remain in prison, but he is not a free agent, he is not able to resist the desire to emancipate himself; his chains prevent him from acting, but they do not prevent him from willing; he would save himself if they would loose his fetters, but he would not save himself as a free agent, fear or the idea of punishment would be sufficient motives for his action.

Man may therefore cease to be restrained, without, for that reason, becoming a free agent: in whatever manner he acts, he will act necessarily; according to motives by which he shall be determined. He may be compared to a heavy body, that finds itself arrested in its descent by any obstacle whatever: take away this obstacle, it will gravitate or continue to fall; but who shall say this dense body is free to fall or not? Is not its descent the necessary effect of its own specific gravity? The virtuous Socrates submitted to the laws of his country, although they were unjust; notwithstanding the doors of his gaol were left open to him he would not save himself; but in this he did not act as a free agent; the invisible chains of opinion, the secret love of decorum, the inward respect for the laws, even when they were iniquitous, the fear of tarnishing his glory, kept him in his prison: they were motives sufficiently powerful, with this enthusiast for virtue, to induce him to wait death with tranquility; it was not in his power to save himself, because he could find no potential motive to bring him to depart, even for an instant, from those principles to which his mind was accustomed.

Man, says he, frequently acts against his inclination, from whence he has falsely concluded he is a free agent; when he appears to act contrary to his inclination, he is determined to it by some motive sufficiently efficacious to vanquish this inclination. A sick man, with a view to his cure, arrives at conquering his repugnance to the most disgusting remedies: the fear of pain, the dread of death, then become necessary and intelligent motives; consequently, this sick man cannot be said, with truth, by any means, to act freely.

When it is said, that man is not a free agent, it is not pretended to compare him to a body moved by a simple impulsive cause: he contains within himself causes inherent to his existence; he is moved by an interior organ, which has its own peculiar laws; which is itself necessarily determined, in consequence of ideas formed from perceptions, resulting from sensations, which it receives from exterior objects. As the mechanism of these sensations, of these perceptions, and the manner they engrave ideas on the brain of man, are not known to him, because he is unable to unravel all these motions; because he cannot perceive the chain of operations in his soul, or the motive-principle that acts within him, he supposes himself a free agent; which, literally translated, signifies that he moves himself by himself; that he determines himself without cause; when he rather ought to say, he is ignorant how or for why he acts in the manner he does. It is true the soul enjoys an activity peculiar to itself, but it is equally certain that this activity would never be displayed if some motive or some cause did not put it in a condition to exercise itself, at least it will not be pretended that the soul is able either to love or to hate without being moved, without knowing the objects, without having some idea of their qualities. Gunpowder has unquestionably a particular activity, but this activity will never display itself, unless fire be applied to it; this, however, immediately sets in motion.

3. It is the great complication of motion in man, it is the variety of his action, it is the multiplicity of causes that move him, whether simultaneously or in continual succession, that persuades him he is a free agent: if all his motions were simple, if the causes that move him did not confound themselves with each other, if they were distinct, if his machine was less complicated, he would perceive that all his actions were necessary, because he would be enabled to recur instantly to the cause that made him act. A man who should be always obliged to go towards the west would always go on that side, but he would feel extremely well, that in so going he was not a free agent: if he had another sense, as his actions or his motion augmented by a sixth would be still more varied, much more complicated, he would believe himself still more a free agent than he does with his five senses.

It is, then, for want of recurring to the causes that move him, for want of being able to analyse, from not being competent to decompose the complicated motion of his machine, that man believes himself a free agent; it is only upon his own ignorance that he founds the profound yet deceitful notion he has of his free-agency, that he builds those opinions which he brings forward as a striking proof of his pretended freedom of action. If, for a short time, each man was willing to examine his own peculiar actions, to search out their true motives, to discover their concatenation, he would remain convinced that the sentiment he has of his natural free-agency is a chimera that must speedily be destroyed by experience.

Nevertheless, it must be acknowledged that the multiplicity, the diversity of the causes which continually act upon man, frequently without even his knowledge, render it impossible, or at least extremely difficult, for him to recur to the true principles of his own peculiar actions, much less the actions of others; they frequently depend upon causes so fugitive, so remote from their effects, and which, superficially examined, appear to have so little analogy, so slender a relation with them, that it requires singular sagacity to bring them into light. This is what renders the study of the moral man a task of such difficulty; this is the reason why his heart is an abyss, of which it is frequently impossible for him to fathom the depth. He is, then, obliged to content himself with a knowledge of the general and necessary laws by which the human heart is regulated; for the individuals of his own species these laws are pretty nearly the same, they vary only in consequence of the organization that is peculiar to each, and of the modification it undergoes; this, however, is not, cannot be rigorously the same in any two. It suffices to know that by his essence man tends to conserve himself, to render his existence happy: this granted, whatever may be his actions, if he recurs back to this first principle, to this general, this necessary tendency of his will, he never can be deceived with regard to his motives. Man, without doubt, for want of cultivating reason, being destitute of experience, frequently deceives himself upon the means of arriving at this end; sometimes the means he employs are unpleasant to his fellows, because they are prejudicial to their interests; or else those of which he avails himself appear irrational, because they remove him from the end to which he would approximate: but whatever may be these means, they have always necessarily and invariably for object, either an existing or imaginary happiness; are directed to preserve himself in a state analogous to his mode of existence, to his manner of feeling, to his way of thinking; whether durable or transitory. It is from having mistaken this truth, that the greater number of moral philosophers have made rather the romance, than the history of the human heart; they have attributed the actions of man to fictitious causes; at least they have not sought out the necessary motives of his conduct. Politicians and legislators have been in the same state of ignorance; or else impostors have found it much shorter to employ imaginary motive-powers, than those which really have existence: they have rather chosen to make man wander out of his way, to make him tremble under incommodious phantoms, than guide him to virtue by the direct road to happiness; notwithstanding the conformity of the latter with the natural desires of his heart. So true it is, that error can never possibly be useful, to the human species. …

If he understood the play of his organs, if he was able to recal to himself all the impulsions they have received, all the modifications they have undergone, all the effects they have produced, he would perceive, that all his actions are submitted to that fatality which regulates his own particular system, as it does the entire system of the universe: no one effect in him, any more than in Nature, produce itself by chance; this, as has been before proved, is a word void of sense. All that passes in him, all that is done by him, as well as all that happens in Nature, or that is attributed to her, is derived from necessary laws, which produce necessary effects; from whence necessarily flow others.

Fatality is the eternal, the immutable, the necessary order established in Nature, or the indispensible connection of causes that act with the effects they operate. Conforming to this order, heavy bodies fall, light bodies rise; that which is analogous in matter, reciprocally attracts; that which is heterogeneous, mutually repels; man congregates himself in society, modifies each his fellow, becomes either virtuous or wicked; either contributes to his mutual happiness, or reciprocates his misery; either loves his neighbour, or hates his companion necessarily; according to the manner in which the one acts upon the other. From whence it may be seen, that the same necessity which regulates the physical, also regulates the moral world: in which every thing is in consequence submitted to fatality. Man, in running over, frequently without his own knowledge, often in despite of himself, the route which Nature has marked out for him, resembles a swimmer who is obliged to follow the current that carries him along; he believes himself a free agent, because he sometimes consents, sometimes does not consent, to glide with the stream; which, notwithstanding, always hurries him forward; he believes himself the master of his condition, because he is obliged to use his arms under the fear of sinking.

4.1: Determinism is shared under a CC BY-SA 4.0 license and was authored, remixed, and/or curated by LibreTexts.