Plotinos: Complete Works, vol. 1 (tratados 1–21, biografías) · 6

The soul, which is the principal part of man, and which constitutes man himself,35 should bear to the body the relation of form to matter, or of a workman to his tool;36 in both cases the soul is the man himself.

2. What then is the nature of the soul? If she is a body, she can be decomposed, as every body is a composite. If, on the contrary, she is not a body, if hers is a different nature, the latter must be examined; either in the same way that we have examined the body, or in some other way.

(a.) (Neither a material molecule, nor a material aggregation of material atoms could possess life and intelligence.) First, let us consider the nature of this alleged soul-body. As every soul necessarily possesses life, and as the body, considered as being the soul, must obtain at least two molecules, if not more (there are three possibilities): either only one of them possesses life, or all of them possess it, or none of them. If one58 molecule alone possesses life, it alone will be the soul. Of what nature will be that molecule supposed to possess life by itself? Will it be water (Hippo), air (Anaximenes, Archelaus, and Diogenes), earth, or fire (Heraclitus, Stobaeus?37) But those are elements that are inanimate by themselves, and which, even when they are animated, possess but a borrowed life. Still there is no other kind of body. Even those (philosophers, like the Pythagoreans) who posited elements other (than water, air, earth and fire) still considered them to be bodies, and not souls, not even attributing souls to them. The theory that life results from the union of molecules of which, nevertheless, none by itself possesses life, is an absurd hypothesis. If further any molecule possesses life, then a single one would be sufficient.

The most irrational theory of all is that an aggregation of molecules should produce life, that elements without intelligence should beget intelligence. Others (like Alexander of Aphrodisia) insist that to produce life these elements must be mingled in a certain manner. That would, however, imply (as thought Gallen and Hippocrates38) the existence of a principle which produces order, and which should be the cause of mixture or, temperament,39 and that should alone deserve being considered as soul. No simple bodies could exist, much less composite bodies, unless there was a soul in the universe; for it is (seminal) reason which, in, adding itself to matter, produces body.40 But surely a (seminal) reason could proceed from nowhere except a soul.

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3. (b.) (No aggregation of atoms could form a whole that would be one and sympathetic with itself.) Others, on the contrary, insist that the soul is constituted by the union of atoms or indivisibles (as thought Leucippus, Democritus and Epicurus.41) To refute this error, we have to examine the nature of sympathy (or community of affection, a Stoic characteristic of a living being,42) and juxtaposition.43 On the one hand an aggregation of corporeal molecules which are incapable of being united, and which do not feel cannot form a single sympathetic whole such as is the soul, which is sympathetic with herself. On the other hand, how could a body or extension be constituted by (a juxtaposition of) atoms?

(c.) (Every body is a composite of matter and form, while the soul is a simple substance.) Inasmuch as matter possesses no quality,44 the matter of no simple body will be said to possess life in itself. That which imparts life to it must then be its form. If form is a "being," the soul cannot simultaneously be matter and form; it will be only matter or form. Consequently, the soul will not be the body, since the body is not constituted by matter exclusively, as could be proved analytically, if necessary.

(d.) (The soul is not a simple manner of being of matter, because matter could not give itself a form.) Some Stoics might deny that form was a "being," asserting the soul to be a mere affection (or, manner of60 being) of matter.45 From whence then did matter acquire this affection and animating life? Surely matter itself could not endow itself with a form and a soul. That which endows matter or any body with life must then be some principle alien and superior to corporeal nature.

(e.) (No body could subsist without the power of the universal soul.) Besides no body could subsist without the power of the universal Soul (from Numenius46). Every body, indeed, is in a perpetual flow and movement (as thought Heraclitus, in Plato, Cratylus47), and the world would soon perish if it contained nothing but bodies, even if some one of them were to be called soul; for such a soul, being composed of the same matter as the other bodies, would undergo the same fate that they do; or rather, there would not even be any body, everything would remain in the condition of shapeless matter, since there would exist no principle to fashion it. Why, there would not even be any matter, and the universe would be annihilated to nothingness, if the care of keeping its parts united were entrusted to some body which would have nothing but the name of soul, as for instance, to air, or a breath without cohesion,48 which could not be one, by itself. As all bodies are divisible, if the universe depended on a body, it would be deprived of intelligence and given up to chance. How, indeed, could there be any order in a spirit which itself would need to receive order from a soul? How could this spirit contain reason and intelligence? On the hypothesis of the existence of the soul, all these elements serve to constitute the body of the world, and of every animal,61 because all different bodies together work for the end of all; but without the soul, there is no order, and even nothing exists any more.

4. (f) (If the soul is anything but simple matter, she must be constituted by a substantial form.) Those who claim that the soul is a body are, by the very force of the truth, forced to recognize the existence, before and above them, of a form proper to the soul; for they acknowledge the existence of an intelligent spirit, and an intellectual fire (as do the Stoics, following in the footsteps of Heraclitus, Stobaeus49). According to them, it seems that, without spirit or fire, there cannot be any superior nature in the order of beings, and that the soul needs a location where she may be built up. On the contrary, it is bodies alone that need to be built up on something, and indeed, they are founded on the powers of the soul. If really we do believe that the soul and life are no more than a spirit, why add the qualification "of a certain characteristic,"50 a meaningless term employed when forced to admit an active nature superior to that of bodies. As there are thousands of inanimate spirits, not every spirit is a soul. If only that spirit is a soul which possesses that "special characteristic," this "special characteristic" and this "manner of being" will either be something real, or will be nothing. If they are nothing, there will be nothing real but spirit, and this alleged "manner of being" is nothing more than a word. In that system, therefore, nothing but matter really exists. God, the soul, and all other things are no more than a word; the body alone really subsists. If, on the contrary, that "manner of being" is something real, if it is anything else than substrate or62 matter, if it resides in matter without being material or composed of matter, it must then be a nature different from the body, namely, a reason (by a pun).51

(g.) (The body exerts an uniform action, while the soul exerts a very diverse action.) The following considerations further demonstrate the impossibility of the soul being a body. A body must be hot or cold, hard or soft, liquid or solid, black or white, or qualities differing according to its nature. If it is only hot or cold, light or heavy, black or white, it communicates its only quality to what comes close to it; for fire could not cool, nor ice heat. Nevertheless, the soul produces not only different effects in different animals, but contrary effects even in the same being; she makes certain things solid, dense, black, light, and certain others liquid, sparse, white, or heavy. According to the different quality of the body, and according to its color, she should produce but a single effect; nevertheless, she exerts a very diverse action.

5. (h.) (The body has but a single kind of motion while the soul has different ones.) If the soul is a body, how does it happen that she has different kinds of motion instead of a single one, as is the case with the body? Will these movements be explained by voluntary determinations, and by (seminal) reasons? In this case neither the voluntary determinations, nor these reasons, which differ from each other, can belong to a single and simple body; such a body does not participate in any particular reason except by the principle that made it hot or cold.

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(i.) (Souls cannot, as do bodies, lose or gain parts, ever remaining identical.) The body has the faculty of making its organs grow within a definite time and in fixed proportions. From where could the soul derive them? Its function is to grow, not to cause growth, unless the principle of growth be comprehended within its material mass. If the soul that makes the body grow was herself a body, she should, on uniting with molecules of a nature similar to hers, develop a growth proportional to that of the organs. In this case, the molecules that will come to add themselves to the soul will be either animate or inanimate; if they are animate, how could they have become such, and from whom will they have received that characteristic? If they are not animate, how will they become such, and how will agreement between them and the first soul arise? How will they form but a single unity with her, and how will they agree with her? Will they not constitute a soul that will remain foreign to the former, who will not possess her requirements of knowledge? This aggregation of molecules that would thus be called soul will resemble the aggregation of molecules that form our body. She would lose parts, she would acquire new ones; she will not be identical. But if we had a soul that was not identical, memory and self-consciousness of our own faculties would be impossible.

(j.) (The soul, being one and simple, is everywhere entire, and has parts that are identical to the whole; this is not the case with the body.) If the soul is a body, she will have parts that are not identical with the whole, as every body is by nature divisible. If then the soul has a definite magnitude of which she cannot lose anything without ceasing to be a soul, she will by64 losing her parts, change her nature, as happens to every quantity. If, on losing some part of its magnitude, a body, notwithstanding, remains identical in respect to quality, it does not nevertheless become different from what it was, in respect to quantity, and it remains identical only in respect to quality, which differs from quantity. What shall we answer to those who insist that the soul is a body? Will they say that, in the same body, each part possesses the same quality as the total soul, and that the case is similar with the part of a part? Then quantity is no longer essential to the nature of the soul; which contradicts the hypothesis that the soul needed to possess a definite magnitude. Besides the soul is everywhere entire; now it is impossible for a body to be entire in several places simultaneously, or have parts identical to the whole. If we refuse the name of soul to each part, the soul is then composed of inanimate parts. Besides, if the soul is a definite magnitude, she cannot increase or diminish without ceasing to be a soul; but it often happens that from a single conception or from a single germ are born two or more beings, as is seen in certain animals in whom the germs divide;52 in this case, each part is equal to the whole. However superficially considered, this fact demonstrates that the principle in which the part is equal to the whole is essentially superior to quantity, and must necessarily lack any kind of quantity. On this condition alone can the soul remain identical when the body loses its quantity, because she has need of no mass, no quantity, and because her essence is of an entirely different nature. The soul and the (seminal) reasons therefore possess no extension.

6. (k.) (The body could not possess either sensation, thought, or virtue.) If the soul were a body, she65 would not possess either sensation, thought, science, virtue, nor any of the perfections that render her more beautiful. Here follows the proof.

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 Anima53). 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,66 must the sensations that centre in the (Stoic) "directing principle"54 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.)

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.55 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;67 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.

7. 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.56 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 will68 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).57 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.

8. If, in any sense whatever, the soul were a body, we could not think. Here is the proof. If feeling58 is explained as the soul's laying hold of perceptible things by making use of the body, thinking cannot also of making use of the body. Otherwise, thinking and feeling would be identical. Thus, thinking must consist in perceiving without the help of the body (as thought Aristotle59). So much the more, the thinking principle cannot be corporeal. Since it is sensation that grasps sense-objects, it must likewise be thought, or intellection, that grasps intelligible objects. Though this should be denied, it will be admitted that we think certain intelligibles entities, and that we perceive entities that have no extension. How could an entity that had extension think one that had no extension? Or a divisible entity, think an indivisible one? Could this take place by an indivisible part? In this case, the thinking subject will not be corporeal; for there is no need that the whole subject be in contact with the object; it would suffice if one of its parts reached the object (as Aristotle said against Plato).6069 If then this truth be granted, that the highest thoughts must have incorporeal objects, the latter can be cognized only by a thinking principle that either is, or becomes independent of body. Even the objection that the object of thought is constituted by the forms inherent in matter, implies that these forces cannot be thought unless, by intelligence, they are separated from matter. It is not by means of the carnal mass of the body, nor generally by matter, that we can effect the abstraction of triangle, circle, line or point. To succeed in this abstraction, the soul must separate from the body, and consequently, the soul cannot be corporeal.

Neither do beauty or justice possess extension, I suppose; and their conception must be similar. These things can be cognized or retained only by the indivisible part of the soul. If the latter were corporeal, where indeed could virtues, prudence, justice and courage exist? In this case, virtues (as Critias thought),61 would be no more than a certain disposition of the spirit, or blood (as Empedocles also thought).62 For instance, courage and temperance would respectively be no more than a certain irritability, and a fortunate temperament of the spirit; beauty would consist in the agreeable shape of outlines, which cause persons, in whom they occur, to be called elegant and handsome. Under this hypothesis, indeed, the types of spirit might possess vigor and beauty. But what need would it have of temperance? On the contrary, the spirit would seek to be agreeably affected by the things it touches and embraces, to enjoy a moderate heat, a gentle coolness, and to be in contact only with sweet, tender, and smooth entities. What incentive would the spirit have to apportion rewards to those who had deserved them?

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Are the notions of virtue, and other intelligible entities by the soul thought eternal, or does virtue arise and perish? If so, by what being, and how will it be formed? It is the same problem that remains to be solved. Intelligible entities must therefore be eternal and immutable, like geometrical notions, and consequently cannot be corporeal. Further, the subject in whom they exist must be of a nature similar to theirs, and therefore not be corporeal; for the nature of body is not to remain immutable, but to be in a perpetual flow.

(9.) There are men who locate the soul in the body, so as to give her a foundation in some sphere of activity, to account for the various phenomena in the body, such as getting hot or cold, pushing on or stopping, (and the like). They evidently do not realize that bodies produce these effects only through incorporeal powers, and that those are not the powers that we attribute to the soul, which are thought, sensation, reasoning, desire, judiciousness, propriety and wisdom, all of them entities that cannot possible be attributes of a corporeal entity. Consequently, those (materialists) attribute to the body all the faculties of incorporeal essences, and leave nothing for the latter.

The proof that bodies are activated only by incorporeal faculties may be proved as follows: Quantity and quality are two different things. Every body has a quantity, but not always a quality, as in the case of71 matter, (according to the Stoic definition, that it was a body without quality, but possessing magnitude63). Granting this, (you Stoic) will also be forced to admit that as quality is something different from quantity, it must consequently be different from the body. Since then every body has a quantity, how could quality, which is no quantity, be a body? Besides, as we said above,64 every body and mass is altered by division; nevertheless, when a body is cut into pieces, every part preserves the entire quality without undergoing alteration. For instance, every molecule of honey, possesses the quality of sweetness as much as all the molecules taken together; consequently that sweetness cannot be corporeal; and other qualities must be in a similar case. Moreover, if the active powers were corporeal, they would have to have a material mass proportional to their strength or weakness. Now there are great masses that have little force, and small ones that have great force; demonstrating that power does not depend on extension, and should be attributed to some (substance) without extension. Finally, you may say that matter is identical with body, and produces different beings only by receiving different qualities (the Stoics considering that even the divinity was no more than modified matter, their two principles being matter and quality;65 the latter, however, was also considered as body). How do you (Stoics) not see that qualities thus added to matter are reasons, that are primary and immaterial? Do not object that when the spirit (breath) and blood abandon animals, they cease to live; for if these things are necessary to life, there are for our life many other necessities, even during the presence of the soul (as thought Nemesius).66 Besides, neither spirit nor blood are distributed to every part of the body.

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(10). The soul penetrates the whole body, while an entire body cannot penetrate another entire body. Further, if the soul is corporeal, and pervades the whole body, she will, with the body, form (as Alexander of Aphrodisia pointed out) a mixture,67 similar to the other bodies (that are constituted by a mixture of matter and quality, as the Stoics taught). Now as none of the bodies that enter into a mixture is in actualization68 the soul, instead of being in actualization in the bodies, would be in them only potentially; consequently, she would cease to be a soul, as the sweet ceases to be sweet when mingled with the bitter; we would, therefore, have no soul left. If, when one body forms a mixture with another body, total penetration occurs, so that each molecule contains equal parts of two bodies and that each body be distributed equally in the whole space occupied by the mass of the other, without any increase of volume, nothing that is not divided will remain. Indeed, mixture operates not only between the larger parts (which would be no more than a simple juxtaposition); but the two bodies must penetrate each other mutually, even if smaller—it would indeed be impossible for the smaller to equal the greater; still, when the smaller penetrates the larger it must divide it entirely. If the mixture operates in this manner in every part, and if no undivided part of the mass remain, the body must be divided into points, which is impossible. Indeed, were this division pushed to infinity, since every body is fully divisible, bodies will have to be infinite not only potentially, but also in actuality. It is therefore impossible for one entire body to penetrate another in its entirety. Now as the soul penetrates the entire body, the soul must be incorporeal (as thought Nemesius).69

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(11). (If, as Stoics claim, man first was a certain nature called habit,70 then a soul, and last an intelligence, the perfect would have arisen from the imperfect, which is impossible). To say that the first nature of the soul is to be a spirit, and that this spirit became soul only after having been exposed to cold, and as it were became soaked by its contact, because the cold subtilized it;71 this is an absurd hypothesis. Many animals are born in warm places, and do not have their soul exposed to action of cold. Under this hypothesis, the primary nature of the soul would have been made dependent on the concourse of exterior circumstances. The Stoics, therefore, posit as principle that which is less perfect (the soul), and trace it to a still less perfect earlier thing called habit (or form of inorganic things).72 Intelligence, therefore, is posited in the last rank since it is alleged to be born of the soul, while, on the contrary, the first rank should be assigned to intelligence, the second to the soul, the third to nature, and, following natural order, consider that which is less perfect as the posterior element. In this system the divinity, by the mere fact of his possessing intelligence, is posterior and begotten, possessing only an incidental intelligence. The result would, therefore, be that there was neither soul, nor intelligence, nor divinity; for never can that which is potential pass to the condition of actualization, without the prior existence of some actualized principle. If what is potential were to transform itself into actualization—which is absurd—its passage into actualization will have to involve at the74 very least a contemplation of something which is not merely potential, but actualized. Nevertheless, on the hypothesis that what is potential can permanently remain identical, it will of itself pass into actualization, and will be superior to the being which is potential only because it will be the object of the aspiration of such a being. We must, therefore, assign the first rank to the being that has a perfect and incorporeal nature, which is always in actualization. Thus intelligence and soul are prior to nature; the soul, therefore, is not a spirit, and consequently no body. Other reasons for the incorporeality of the soul have been advanced; but the above suffices (as thought Aristotle).73

(12). a. Since the soul is not corporeal, its real nature must be ascertained. Shall we assert that she is something distinct from the body, but dependent thereon, as, for instance, a harmony? Pythagoras, indeed, used this word in a technical sense; and after him the harmony of the body has been thought to be something similar to the harmony of a lyre. As tension produces in the lyre-strings an affection (or, manner of being, or state) that is called harmony, likewise, as contrary elements are mingled in our body, an individual mixture produces life and soul, which, therefore, is only an individual affection of this mixture.