The subject that perceives a sense-object must itself be single, and grasp this object in its totality, by one and the same power. This happens when by several organs we perceive several qualities of a single object, or when, by a single organ, we embrace a single complex object in its totality, as, for instance, a face. It is not one principle that sees the face, and another one that sees the eyes; it is the “same principle” which embraces everything at once. Doubtless we do receive a sense-impression by the eyes, and another by the ears; but both of them must end in some single principle. How, indeed, could any decision be reached about the difference of sense-impressions unless they all converged toward the same principle? The latter is like a centre, and the individual sensations are like radii which from the circumference radiate towards the centre of a circle. This central principle is essentially single. If it was divisible, and if sense-impressions were directed towards two points at a distance from each other, such as the extremities of the same line, they would either still converge towards one and the same point, as, for instance, the middle (of the line), or one part would feel one thing, and another something else. It would be absolutely as if I felt one thing, and you felt another, when placed in the presence of one and the same thing (as thought Aristotle, de Anima). Facts, therefore, demonstrate that sensations centre in one and the same principle; as visible images are centred in the pupil of the eye; otherwise how could we, through the pupil, see the greatest objects? So much the more, therefore, must the sensations that centre in the (Stoic) “directing principle” resemble indivisible intuitions and be perceived by an indivisible principle. If the latter possessed extension, it could, like the sense-object, be divided; each of its parts would thus perceive one of the parts of the sense-object, and nothing within us would grasp the object in its totality. The subject that perceives must then be entirely one; otherwise, how could it be divided? In that case it could not be made to coincide with the sense-object, as two equal figures superimposed on each other, because the directing principle does not have an extension equal to that of the sense-object. How then will we carry out the division? Must the subject that feels contain as many parts as there are in the sense-object? Will each part of the soul, in its turn, feel by its own parts, or will (we decide that) the parts of parts will not feel? Neither is that likely. If, on the other hand, each part feels the entire object, and if each magnitude is divisible to infinity, the result is that, for a single object, there will be an infinity of sensations in each part of the soul; and, so much the more, an infinity of images in the principle that directs us. (This, however, is the opposite of the actual state of affairs.) [Ennead IV,7 (2) 6]
Besides, if the principle that feels were corporeal, it could feel only so long as exterior objects produced in the blood or in the air some impression similar to that of a seal on wax. If they impressed their images on wet substances, as is no doubt supposed, these impressions would become confused as images in water, and memory would not occur. If, however, these impressions persisted, they would either form an obstacle to subsequent ones, and no further sensation would occur; or they would be effaced by the new ones, which would destroy memory. If then the soul is capable of recalling earlier sensations, and having new ones, to which the former would form no obstacle, it is because she is not corporeal. [Ennead IV,7 (2) 6]
The same reflections may be made about pain, and one’s feeling of it. When a man’s finger is said to give him pain, this, no doubt, is a recognition that the seat of the pain is in the finger, and that the feeling of pain is experienced by the directing principle. Consequently, when a part of the spirit suffers, this suffering is felt by the directing principle, and shared by the whole soul. How can this sympathy be explained? By relay transmission, (the Stoic) will answer; the sense-impression is felt first by the animal spirit that is in the finger, and then transmitted to the neighboring part, and so on till it reaches the directing part. Necessarily, if the pain is felt by the first part that experiences it, it will also be felt by the second part to which it is transmitted; then by the third, and so on, until the one pain would have caused an infinite number of sensations. Last the directing principle will perceive all these sensations, adding thereto its own sensation. Speaking strictly, however, each of these sensations will not transmit the suffering of the finger, but the suffering of one of the intermediate parts. For instance, the second sensation will relay the suffering of the hand. The third, that of the arm, and so on, until there will be an infinity of sensations. The directing principle, for its part, will not feel the pain of the finger, but its own; it will know none but that, it will pay no attention to the rest, because it will ignore the pain suffered by the finger. Therefore, relayed sensation is an impossibility, nor could one part of the body perceive the suffering felt by another part; for the body has extension, and, in every extension, parts are foreign to each other (the opposite of the opinion of Cleanthes, Nemesius). Consequently, the principle that feels must everywhere be identical with itself; and among all beings, the body is that which is least suitable to this identity. [Ennead IV,7 (2) 7]
If the soul’s relation to the body is the same as that of the statue to the metal, the soul will be divided with the body, and on cutting a member a portion of the soul would be cut along with it. According to this teaching, the soul separates from the body only during sleep, since she must inhere in the body of which she is the entelechy, in which case sleep would become entirely inexplicable. If the soul be an entelechy, the struggle of reason against the passions would become entirely impossible. The entire human being will experience but one single sentiment, and never be in disagreement with itself. If the soul be an entelechy, there will perhaps still be sensations, but mere sensations; pure thoughts will have become impossible. Consequently the Peripateticians themselves are obliged to introduce (into human nature) another soul, namely, the pure intelligence, which they consider immortal. The rational soul, therefore, would have to be an entelechy in a manner different from their definition thereof, if indeed this name is at all to be used. [Ennead IV,7 (2) 8]
(Plato) further states that the relation of the souls of the stars to their bodies is the same as that of the universal Soul to the universe, where he makes the stars participate in the movements of the universal Soul. He thus grants to those souls the blessedness which is suitable to them. The intercourse of the soul with the body is usually blamed for two things: because it hinders the soul from busying herself with the conceptions of intelligence, and then because it exposes her to agreeable or painful sensations which fill her with desires. Now neither of these two results affect the soul that has not entered into a body, and which does not depend thereon by belonging to some particular individual. Then, on the contrary, she possesses the body of the universe, which has no fault, no need, which can cause her neither fears nor desires, because she has nothing to fear. Thus no anxiety ever forces her to descend to terrestrial objects, or to distract herself from her happy and sublime contemplation. Entirely devoted to divine things, she governs the world by a single power, whose exercise involves no anxiety. [Ennead IV,8 (6) 2]
This is the first reflection of every soul. By an influx of the spirit of life, the universal Soul produced all the animals upon earth, in the air and in the sea, as well as the divine stars, the sun, and the immense heaven. It was the universal Soul that gave form to the heavens, and which presides over their regular revolutions; and she effects all that without mingling with the being to whom she communicates form, movement and life. The universal Soul is far superior to all created things. While the latter are born or die in the measure that she imparts to them, or withdraws from them their life, she herself is “being” and eternal life, because she could not cease being herself. To understand how life can simultaneously be imparted to the universe and to each individual, we must contemplate the universal Soul. To rise to this contemplation, the soul must be worthy of it by nobility, must have liberated herself from error, and must have withdrawn from the objects that fascinate the glances of worldly souls, must have immersed herself in a profound meditation, and she must have succeeded in effecting the silence not only of the agitations of the body that enfolds her, and the tumult of sensations, but also of all that surrounds her. Therefore let silence be kept by all — namely, earth, air, sea, and even heaven. Then let the soul represent to herself the great Soul which, from all sides, overflows into this immovable mass, spreading within it, penetrating into it intimately, illuminating it as the rays of the sun light and gild a dark cloud. Thus the universal Soul, by descending into this world redeemed this great body from the inertia in which it lay, imparting to it movement, life and immortality. Eternally moved by an intelligent power, heaven became a being full of life and felicity. The presence of the Soul made an admirable whole from what before was no more than in inert corpse, water and earth, or rather, darkness of matter, which, as Homer says, was an “object of horror for the divinities.” [Ennead V,1 (10) 2]
Shall we have recourse to the (Stoic) “continuity of parts” to explain the sympathy which interrelates all the organs? This hypothesis, however, is useless, unless this continuity eventuate in unity. For we cannot admit, as do certain (Stoic) philosophers, who deceive themselves, that sensations focus in the “predominating principle” by “relayed transmission.” To begin with, it is a wild venture to predicate a “predominating principle” of the soul. How indeed could we divide the soul and distinguish several parts therein? By what superiority, quantity or quality are we going to distinguish the “predominating part” in a single continuous mass? Further, under this hypothesis, we may ask, Who is going to feel? Will it be the “predominating part” exclusively, or the other parts with it? If that part exclusively, it will feel only so long as the received impression will have been transmitted to itself, in its particular residence; but if the impression impinge on some other part of the soul, which happens to be incapable of sensation, this part will not be able to transmit the impression to the (predominating) part that directs, and sensation will not occur. Granting further that the impression does reach the predominating part itself, it might be received in a twofold manner; either by one of its (subdivided) parts, which, having perceived the sensation, will not trouble the other parts to feel it, which would be useless; or, by several parts simultaneously, and then we will have manifold, or even infinite sensations which will all differ from each other. For instance, the one might say, “It is I who first received the impression”; the other one might say, “I received the impression first received by another”; while each, except the first, will be in ignorance of the location of the impression; or again, each part will make a mistake, thinking that the impression occurred where itself is. Besides, if every part of the soul can feel as well as the predominating part, why at all speak of a “predominating part?” What need is there for the sensation to reach through to it? How indeed would the soul recognize as an unity the result of multiple sensations; for instance, of such as come from the ears or eyes? [Ennead IV,2 (21) 2]
Why (if the universal Soul possess the magnitude here attributed to her), does she not approach some other body (than that which she animates; that is, some individual body)? It would be this body’s (privilege or duty) to approach the universal Soul, if it be able to do so; on approaching to her, it receives something, and appropriates it. But would this body, that would approach the universal Soul, not already possess her simultaneously with the soul proper to itself, since these souls (the universal Soul, and the individual soul) do not appear to differ from each other? The fact is, that as their sensations differ, so must the passions that they experience likewise differ. The things are judged to be different, but the judge is the same principle successively placed in presence of different passions, although it be not he who experiences them, but the body disposed in some particular manner. It is as if when some one of us judges both the pleasure experienced by the finger, and the pain felt by the head. But why does not our soul perceive judgments made by the universal Soul? Because this is a judgment, and not a passion. Besides, the faculty that judged the passion does not say, “I have judged,” but it limits itself to judging. Thus, in ourselves, it is not the sight which communicates its judgment to the hearing, although both of these senses made separate judgments; what presides over these two senses is reason, which constitutes a different faculty. Often reason cognizes the judgment made by some other (being), while being conscious simultaneously of the passion it experiences. But this question has been treated elsewhere. [Ennead VI,4 (22) 6]
Sensations are not affections, but actualizations, and judgments, relative to passions. The affections occur in what is other (than the soul); that is, in the organized body, and the judgment in the soul. For if the judgment were an affection, it would itself presuppose another judgment, and so on to infinity. Though accepting this statement, we must, nevertheless, examine whether the judgment itself, as such, in nowise participates in the nature of its object; for if it receive the impression thereof, it is passive. Besides, the “images derived from the senses” — to use the popular language — are formed in a manner entirely different from what is generally believed. They are in the same case as the intellectual conceptions, which are actualizations, and through which, without being affected, we know objects. In general, neither our reason nor our will permit us, in any way, to attribute to the soul modifications and changes such as the heating or cooling of bodies. Further, we have to consider whether that part of the soul, that is called the passive (or affective, or irrational), must also be be considered as unalterable, or as being affectible. But we will take up this question later; we must begin by solving our earlier problems. [Ennead III,6 (26) 1]
Are we compelled to remember sensations by sensibility, whether it be the same power which feels sensation, and which remembers sensation, or is it also discursive reason which conceives and remembers conceptions. But the men who reason the best are not those who also remember the best; and those who have equally delicate senses, do not all, on that account, have an equally good memory. On the contrary, some have delicate senses, while others have a good memory, without however being capable of perceiving equally well. On the other hand, if feeling and remembering be mutually independent, there will be (outside of sensibility) another power which will remember things formerly perceived by sensation, and this power will have to feel what it is to remember. [Ennead IV,3 (27) 29]
What about intellectual conceptions? Are they also preserved by imagination? If imagination accompany every thought, and if later it, as it were, preserves its image, we should thus have the memory of the known object; otherwise some other solution will have to be sought. Perhaps reason, whose actualization always accompanies thought, has the function of receiving it and transmitting it to imagination. Indeed, thought is indivisible, and so long as it is not evoked from the depths of intelligence, it remains as it were hidden within it. Reason develops it, and making it pass from the state of thought to that of image, spreads it out as it were in a mirror, for our imagination. That is why we grasp (the thought) only when the soul, which always desires rational thought, has achieved a thought. There is a difference between thought and the perception of thought. We are always thinking, but we do not always perceive our thought. That comes from the fact that the principle that perceives the thoughts also perceives the sensations, and occupies itself with both in turn. [Ennead IV,3 (27) 30]
That is why there is pleasure and pain. That is why grief is said to be a perception of dissolution, when the body is threatened with the loss of the image of the soul (of being disorganized by losing the irrational soul). That is why it is said that pleasure is a perception produced in the animal when the image of the soul reassumes its sway over the body. It is the body which undergoes passion; but it is the sense-potentiality of the soul which perceives the passion by its relation with the organs; it is she to which all the sensations ultimately report themselves. The body alone is injured and suffers; for example, when one member is cut, it is the mass of the body which is cut; the soul feels pain not merely as a mass, but as a living mass. It is likewise with a burn: the soul feels it, because the sense-potentiality as it were receives its reaction by its relations with the organs. The soul entire feels the passion produced in the body without however herself experiencing it. [Ennead IV,4 (28) 19]
The soul and the exterior object do not therefore suffice (to explain sensation); for there would be nothing that suffers. There must therefore be a third term that suffers, that is, which receives the sense-form, or, shape. This third term must “sympathize,” or, share the passion of the exterior object, it must also experience the same passion, and it must be of the same matter; and, on the other hand, its passion must be known by another principle; last, passion must keep something of the object which produces it, without however being identical with it. The organ which suffers must therefore be of a nature intermediary between the object which produces the passion and the soul, between the sensible and the intelligible, and thus play the part of a term intermediary between the two extremes, being receptive on one side, making announcements on the other, and becoming equally similar to both. The organ that is to become the instrument of knowledge must be identical neither with the subject that knows, nor with the object that is known. It must become similar to both of them; to the exterior object because it suffers, and to the cognizing soul because the passion which it experiences becomes a form. Speaking more accurately, the sensations operate by the organs. This results from the principle asserted above, that the soul isolated from the body can grasp nothing in the sense-world. As used here, the word “organ” either refers to the whole body, or to some part of the body fitted to fulfil some particular function; as in the case of touch or sight. Likewise, it is easy to see that tools of artisans play a part intermediary between the mind which judges, and the object which is judged; and that they serve to discover the properties of substances. For instance, a (foot) rule, which is equally conformed to the idea of straightness in the mind, and to the property of straightness in the wood, serves the artisan’s mind as intermediary to judge if the wood he works be straight. [Ennead IV,4 (28) 23]
The stars know our desires through the agreement and sympathy established between them and us by the harmony reigning in the universe. Our desires are granted by the same method. Likewise, magic is founded on the harmony of the universe; it acts by means of the forces which are interconnected by sympathy. If so, why should we not attribute to the earth the faculty of sensation? Granting this, what sort of sensations would we attribute to it? To begin with, why should we not attribute to it touch, whether by one part feeling the condition of another, and by the transmission of the sensation to the governing power, or by the whole earth feeling the fire, and other similar things; for if the terrestrial element is inert, it certainly is not insensible. The earth will therefore feel the great things, and not those of minor importance. Why should it feel? Surely if the earth have a soul, she will not ignore the strongest motions therein. The earth must also be supposed to feel, in order to dispose all that depends on her for the benefit of humanity. All these things she will suitably dispose by the laws of harmony. She can hear and grant the prayers addressed to her, but in a manner other than we ourselves would do. Besides, she might exercise other senses in her relations, either with herself, or with foreign things; as, for example, to have the sensations of taste and smell perceived by other beings. Perhaps even she has need to perceive the odors of the liquids to fulfil her providential functions in respect to animals, and to take care of her own body. [Ennead IV,4 (28) 26]
But how can one be united to beauty, without seeing it? If it be seen as some thing distinct from oneself, he is not yet fused with it. If the act of vision imply a relation with an exterior object, we have no vision; or, at least, this vision consists in the identity of seer and seen. This vision is a kind of conscience, of self-consciousness; and if this feeling be too acute, there is even danger of breaking up this unity. Besides, one must not forget that the sensations of evils make stronger impressions, and yield feebler knowledge, because the latter are frittered away by the force of impressions. Thus sickness strikes sharply (but arouses only an obscure notion); health, on the contrary, thanks to the calm that characterizes it, yields us a clearer notion of itself, for it remains quietly within us, because it is proper to us, and fuses with us. On the contrary, sickness is not proper to us, but foreign. Consequently it manifests itself vividly, because it is opposed to our nature; while we, on the contrary, enjoy but a feeble feeling of ourselves and of what belongs to us. The state in which we grasp ourselves best is the one in which our consciousness of ourselves fuses with us. Consequently on high, at the very moment when our knowledge by intelligence is at its best, we believe that we are ignorant of it, because we consult sensation, which assures us that it has seen nothing. Indeed it has not seen anything, and it never could see anything such (as the intelligible beings). It is therefore the sensation that doubts; but he who has the ability to see differs therefrom. Before the seer could doubt, he would have to cease believing in his very existence; for he could not, so to speak, externalize himself to consider himself with the eyes of the body. [Ennead V,8 (31) 11]
Of which soul are these reasons, which do not beget the man (though they do beget the animal), then the actualization? Not of the vegetative soul; they are the actualizations of the (reasonable) soul which begets the animal, which is a more powerful, and therefore a more living soul. Man is constituted by the soul disposed in some manner, when present to matter disposed in some particular fashion — since the soul is some particular thing, according as she is in some particular disposition — even in the body. In the bodies, she fashions a resembling form. So far as the nature of the body allows it, she thus produces an image of the man, as the painter himself makes an image of the body; she produces, I repeat, an inferior man (the sense-man, the animal), which possesses the form of man, his reasons, morals, dispositions, faculties, although in an imperfect manner, because he is not the first man (the intellectual man). He has sensations of another kind; sensations which, though they seem clear, are obscure, if they be compared to the superior sensations of which they are the images. The superior man (the reasonable man) is better, has a diviner soul, and clearer sensations. It is he doubtless to whom Plato refers (when he says, Man is the soul); in his definition he adds, “which makes use of the body,” because the diviner man dominates the soul which uses the body, and thus uses the body only in an indirect manner. [Ennead VI,7 (38) 5]
Such considerations have been arrived at merely as result of scrutiny of the consequences of the principles laid down. Our purpose was to discover how sensibility occurs in the man himself, without intelligible things falling into generation. We recognized and demonstrated that intelligible things do not incline towards sense-things, but that, on the contrary, it is the latter that aspire and rise to the former, and imitate them; that the sense-man derives from the intellectual man the power of contemplating intelligible entities, though the sense-man remain united to sense-things, as the intellectual man remains united to the intelligible entities. Indeed, intelligible things are in some respects sensual; and we may call them such because (ideally) they are Bodies, but they are perceived in a manner different from bodies. Likewise, our sensations are less clear than the perception which occurs in the intelligible world, and that we also call Sensation, because it refers to Bodies (which exist on high only in an ideal manner). Consequently, we call the man here below sensual because he perceives less well things which themselves are less good; that is, which are only images of intelligible things. We might therefore say that sensations here below are obscure thoughts, and that the Thoughts on high are distinct Sensations. Such are our views about sensibility. [Ennead VI,7 (38) 7]
But, in order that this truth may appear in its full light, we shall first have to clear away all the other opinions, and especially have to refute the teaching opposite to ours. This is the question asked of us: “What will be the fruit gathered by him who has the intelligence necessary to acquire one of these goods (such as existence and life), if on hearing them named, he be not impressed thereby, because he does not understand them, either because they seem to him no more than words, or because his conception of each of these things should differ (from our view of them), or because in his search for the Good he seeks some sense-object, such as wealth, or the like?” The person who thus scorns these things (existence and life), thereby implicitly recognizes that there is within him a certain good, but that, without knowing in what it consists, he nevertheless values these things according to his own notion of the Good; for it is impossible to say, “that is not the good,” without having some sort of knowledge of the good, or acquaintance therewith. The above speaker seems to betray a suspicion that the Good in itself is above Intelligence. Besides, if in considering the Good in itself, or the good which most approaches it, he do not discern it, he will nevertheless succeed in getting a conception of it by its contraries; otherwise, he would not even know that the lack of intelligence is an evil, though every man desire to be intelligent, and glory in being such, as is seen by the sensations which aspire to become notions. If intelligence, and especially primary Intelligence, be beautiful and venerable, what admiration might not then be felt by him who could contemplate the generating principle, the Father of Intelligence? Consequently, he who affects to scorn existence and life receives a refutation from himself and from all the affections he feels. They who are disgusted of life are those who consider not the true life, but the life which is mingled with death. [Ennead VI,7 (38) 29]
If we deny that sensations are images impressed on the soul, similar to the impression of a seal, we shall also, for the sake of consistency, have to deny that memories are notions or sensations preserved in the soul by the permanence of the impression, inasmuch as, according to our opinion, the soul did not originally receive any impression. The two questions, therefore, hang together. Either we shall have to insist that sensation consists in an image impressed on the soul, and memory, in its preservation; or, if either one of these opinions be rejected, the other will have to be rejected also. However, since we regard both of them as false, we shall have to consider the true operation of both sensation and memory; for we declare that sensation is as little the impression of an image as memory is its permanence. The true solution of the question, on the contrary, will be disclosed by an examination of the most penetrating sense, and then by induction transferring the same laws to the other senses. [Ennead IV,6 (41) 8]
Still another argument: in sensations, it is not the weak and impotent organ which perceives by itself; it is not, for instance, the eye that sees, but the active potentiality of the soul. That is why old people have both sensations and memories that are weaker. Both sensation and memory, therefore, imply some energy. [Ennead IV,6 (41) 3]
In general all the processes of the soul occur in a manner very different from that conceived by unobservant men. Psychic phenomena occur very differently from sense-phenomena, the analogy of which may lead to very serious errors. Hence the above unobservant men imagine that sensations and memories resemble characters inscribed on tablets or sheets of paper. Whether they consider the soul material (as do the Stoics), or as immaterial (as do the Peripatetics), they certainly do not realize the absurd consequences which would result from the above hypothesis. [Ennead IV,6 (41) 3]
What sort of differences, indeed, might we use to establish such divisions, and from what genus would we draw them? It seems absurd to classify quality by quality itself. This is just as if the difference of “beings” were to be called “beings.” By what indeed could one distinguish white from black, and colors from tastes and sensations of touch? If we distinguish the difference of these qualities by the sense-organs, these differences would no longer exist in the subjects. How indeed could one and the same sense distinguish the difference of the qualities it perceives? Is it because certain things exercise an action that is constructive or destructive on the eyes, or the tongue? We would then have to ask what is the constructive or destructive element in the sensations thus excited? Yet, even were this answered, such an answer would not explain wherein these things differ. [Ennead VI,3 (44) 17]
It has often been objected that we should reckon with the bodily pains, the diseases, the obstacles which may hinder action, cases of unconsciousness, which might result from certain philtres and diseases (as the Peripatetics objected). Under these conditions, they say, the sage could not live well, and be happy — without either mentioning poverty and lack of recognition. All these evils, not forgetting the famous misfortunes of Priam, justify serious objections. Indeed, even if the sage endured all these evils (as indeed he easily does), they would none the less be contrary to his will; and happy life must necessarily be one that conforms to our will. The sage is not only a soul endowed with particular dispositions; the body also must be comprised within his personality (as also thought the Pythagorean Archytas). This assertion seems reasonable so far as the passions of the body are felt by the man himself, and as they suggest desires and aversions to him. If then pleasure be an element of happiness, how could the man afflicted by the blows of fate and by pains still be happy, even if he were virtuous? To be happy, the divinities need only to enjoy perfect life; but men, having their soul united to a lower part, must seek their happiness in the life of each of these two parts that compose him, and not exclusively in one of the two, even though it were the higher. Indeed, as soon as one of them suffers, the other one, in spite of its superiority, finds its actions hindered. Otherwise we shall have to regard neither the body, nor the sensations that flow from it; and to seek only what by itself could suffice to procure happiness, independently of the body. [Ennead I,4 (46) 5]
Whether the soul, according to her being, be located in the body, above or within this latter, the soul forms with the body an entity called (a “living being” or) organism. In this case, the soul using the body as a tool is not forced to participate in its passions, any more than workmen participate in the experiences of their tools. As to sensations, of course, the soul must perceive them, since in order to use her instrument, the soul must, by means of sensation, cognize the modifications that this instrument may receive from without. Thus seeing consists of using the eyes; and the soul at the same time feels the evils which may affect the sight. Similar is the case with griefs, pains and any corporeal exigency; also with the desires which arise from the soul’s need to take recourse to the ministry of the body. But how do passions from the body penetrate into the soul? For a body could communicate her own properties to some other body; but how could she do so to a soul? [Ennead I,1 (53) 3]