When the soul is assailed by two motives that act alternately upon it, or modify it successively, it deliberates; the brain is in a sort of equilibrium, accompanied with perpetual oscillations, sometimes towards one object, sometimes towards the other, until the most forcible carries the point, and thereby extricates it, from this state of suspense, in which consists the indecision of his will. But when the brain is simultaneously assailed by causes equally strong, that move it in opposite directions; agreeable to the general law of all bodies, when they are struck equally by contrary powers, it stops, it is in nisu; it is neither capable to will nor to act; it waits until one of the two causes has obtained sufficient force to overpower the other, to determine its will, to attract it in such a manner that it may prevail over the efforts of the other cause.

This mechanism, so simple, so natural, suffices to demonstrate, why uncertainty is painful; why suspense is always a violent state for man. The brain, an organ so delicate, so mobile, experiences such rapid modifications, that it is fatigued; or when it is urged in contrary directions, by causes equally powerful, it suffers a kind of compression, that prevents the activity which is suitable to the preservation of the whole, which is necessary to procure what is advantageous to its existence. This mechanism will also explain the irregularity, the indecision, the inconstancy of man; and account for that conduct, which frequently appears an inexplicable mystery, which indeed it is, under the received systems. In consulting experience, it will be found that the soul is submitted to precisely the same physical laws as the material body. If the will of each individual, during a given time, was only moved by a single cause or passion, nothing would be more easy than to foresee his actions; but his heart is frequently assailed by contrary powers, by adverse motives, which either act on him simultaneously or in succession; then his brain, attracted in opposite directions, is either fatigued, or else tormented by a state of compression, which deprives it of activity. Sometimes it is in a state of incommodious inaction; sometimes it is the sport of the alternate shocks it undergoes. Such, no doubt, is the state in which man finds himself, when a lively passion solicits him to the commission of crime, whilst fear points out to him the danger by which it is attended: such, also, is the condition of him whom remorse, by the continued labour of his distracted soul, prevents from enjoying the objects he has criminally obtained.

If the powers or causes, whether exterior or interior, acting on the mind of man, tend towards opposite points, his soul, is well as all other bodies, will take a mean direction between the two; in consequence of the violence with which his soul is urged, his condition becomes sometimes so painful that his existence is troublesome: he has no longer a tendency to his own peculiar conservation; he seeks after death, as a sanctuary against himself—as the only remedy to his despair: it is thus we behold men, miserable and discontented, voluntarily destroy themselves, whenever life becomes insupportable. Man is competent to cherish his existence, no longer than life holds out charms to him; when he is wrought upon by painful sensations, or drawn by contrary impulsions, his natural tendency is deranged, he is under the necessity to follow a new route; this conducts him to his end, which it even displays to him as the most desirable good. In this manner may be explained, the conduct of those melancholy beings, whose vicious temperaments, whose tortured consciences, whose chagrin, whose ennui, sometimes determine them to renounce life.

The various powers, frequently very complicated, that act either successively or simultaneously upon the brain of man, which modify him so diversely in the different periods of his existence, are the true causes of that obscurity in morals, of that difficulty which is found, when it is desired to unravel the concealed springs of his enigmatical conduct. The heart of man is a labyrinth, only because it very rarely happens that we possess the necessary gift of judging it; from whence it will appear, that his circumstances, his indecision, his conduct, whether ridiculous, or unexpected, are the necessary consequences of the changes operated in him; are nothing but the effect of motives that successively determine his will; which are dependent on the frequent variations experienced by his machine. According to these variations, the same motives have not, always, the same influence over his will, the same objects no longer enjoy the faculty of pleasing him; his temperament has changed, either for the moment, or for ever. It follows as a consequence, that his taste, his desires, his passions, will change; there can be no kind of uniformity in his conduct, nor any certitude in the effects to be expected.

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.

The ambitious man cries out,—You will have me resist my passion, but have they not unceasingly repeated to me, that rank, honours, power, are the most desirable advantages in life? Have I not seen my fellow-citizens envy them—the nobles of my country sacrifice every thing to obtain them? In the society in which I live, am I not obliged to feel, that if I am deprived of these advantages, I must expect to languish in contempt, to cringe under the rod of oppression?