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]
The sense-soul, which preserves the forms of sense-objects previously perceived, must preserve them without the body. Otherwise, these forms would inhere in the body like figures and corporeal shapes. Now, if the forms inhered in the sense-soul in this manner, they could not be received therein otherwise (than as corporeal impressions). That is why, if we do grant the existence of an entelechy, it must be inseparable from the body. Even the faculty of appetite, not indeed that which makes us feel the need of eating and drinking, but that which desires things that are independent of the body, could not either be an entelechy. [Ennead IV,7 (2) 8]
We grant that by their movement the stars co-operate in the conservation of the universe, and that they simultaneously play in it another part. They serve as letters for those skilled in deciphering this kind of writing; and who, by the observation of the figures formed by the stars, read into them future events according to the laws of analogy, as for instance, if one presaged high deeds from seeing a bird fly high. [Ennead III,1 (3) 6]
By making use of these mysterious figures, wise interpreters wished to indicate how the divinity might be seen. But the wise hierophant, penetrating the mystery, may, when he has arrived thither, enjoy the veritable vision of what is in the sanctuary. If he have not yet arrived thither, he can at least conceive the invisibility (for physical sight) of That which is in the sanctuary; he can conceive the source and principle of everything, and he recognizes it as the one particular principle worthy of the name. (But when he has succeeded in entering into the sanctuary) he sees the Principle, enters into communication with it, unites like to like, leaving aside no divine thing the soul is capable of acquiring. [Ennead VI,9 (9) 11]
Plato agreed with this, and being persuaded that, by participation, matter does not receive form and shape, as would some substrate that should constitute a composite of things intimately united by their transformation, their mixture, and their common affections; in order to demonstrate the opposite, namely, that matter remains impassible while receiving forms, invented a most apposite illustration of a participation that operates without anything being affected (namely, that engravers, before using dies on the soft wax, clean them carefully). Almost any other kind of illustration would fail to explain how the substrate can remain the same in the presence of forms. While trying to achieve his purpose, Plato has raised many questions; he has besides applied himself to demonstrate that sense-objects are devoid of reality, and that a large part of their hypostatic substance is constituted by appearance. Plato demonstrates the permanence and identity of matter by showing that it is by the figures with which it is endued that matter affects animated bodies, without itself suffering any of their affections. He wishes to convince us that in being endued with these figures, matter undergoes neither affection nor alteration. Indeed, in the bodies that successively assume different figures, we may, relying on analogy, call the change of figures an alteration; but since matter has neither figure nor existence, how could we, even by analogy, call the presence of a figure an alteration? The only sure way of avoiding a misunderstanding in expression is to say that the substrate possesses nothing in the manner it is usually supposed to possess it. How then could it possess the things it contains, unless as a figure? Plato’s illustration means that matter is impassible, and that it contains the apparent presence of images which are not really present therein. [Ennead III,6 (26) 12]
When dealing with numbers and geometrical figures, as well as with bodies, it is evident that the whole is necessarily diminished by its division into parts, and that each part is smaller than the whole. Rightly, these things should be susceptible to increase or diminution, as their nature is that of definite quantities, not quantity in itself. It is surely not in this sense that, when referring to the soul, we speak of quantities. The soul is not a quantity such as a “dozen,” which forms a whole divisible into unities; otherwise, we would end in a host of absurdities, since a group of ten is not a genuine unity. Either each one of the unities would have to be soul, or the Soul herself result from a sum of inanimate unities. [Ennead IV,3 (27) 2]
Human souls rush down here below because they have gazed at their images (in matter) as in the mirror of Bacchus. Nevertheless, they are not separated from their principle, Intelligence. Their intelligence does not descend along with them, so that even if by their feet they touch the earth, their head rises above the sky. They descend all the lower as the body, over which their intermediary part is to watch, has more need of care. But their father Jupiter, pitying their troubles, made their bonds mortal. At certain intervals, he grants them rest, delivering them from the body, so that they may return to inhabit the region where the universal Soul ever dwells, without inclining towards things here below. Indeed what the universe at present possesses suffices it both now and in the future, since its duration is regulated by eternal and immutable reasons, and because, when one period is finished, it again begins to run through another where all the lives are determined in accordance with the ideas. In that way all things here below are subjected to intelligible things, and similarly all is subordinated to a single reason, either in the descent or in the ascension of souls, or in their activities in general. This is proved by the agreement between the universal order and the movements of the souls which by descending here below, conform to this order without depending on it; and perfectly harmonize with the circular movement of heaven. Thus the actions, fortunes and destinies ever are prefigured in the figures formed by the stars. That is the symphony whose sound is so melodious that the ancients expressed it symbolically by musical harmony. Now this could not be the case unless all the actions and experiences of the universe were (well) regulated by reasons which determine its periods, the ranks of souls, their existences, the careers that they accomplish in the intelligible world, or in heaven, or on the earth. The universal Intelligence ever remains above the heaven, and dwelling there entirely, without ever issuing from itself; it radiates into the sense-world by the intermediation of the Soul which, placed beside it, receives the impression of the idea, and transmits it to inferior things, now immutably, and then changeably, but nevertheless in a regulated manner. [Ennead IV,3 (27) 12]
As the circular movement of the world has nothing fortuitous, inasmuch as it is produced conformably to the reason of this great animal, a perfect symphonic (co-operation) between what “acts” and what “reacts” must exist within it; and there must also have been an order which would co-ordinate things one with another, so that at each of the phases of the circular movement of the world there might be a correspondence between the various beings subject to it, as if, in a varied choric ballet the dancers formed a single figure. As to our own modern dances, it is easy to explain the eternal things which contribute thereto, and which differ for every motion, like the sounds of the flute, the songs, and the other circumstances which are thereto related. It is not however as easy to conceive the motions of a person who conforms himself strictly to each figure, who accompanies, who raises one limb, or lowers another, who moves this limb, or holds the other limb motionless in a different attitude. The dancer’s eyes are doubtless fixed on some further aim while his limbs are still responding to the motions inspired by the music, by co-operating in expressing them, and in completing them symmetrically. Likewise, a man learned in the art of dancing could explain the reason that, in such a figure, such a limb is raised, such a limb is bent, while others are hidden or lowered; not indeed that the dancer deliberates about these different attitudes, but because in the general movement of his body he considers such a posture suitable to such a limb to fulfil its proper part in the dance. Likewise do the stars produce certain facts, and announce other ones. The entire world realizes its universal life by causing the motion of the greater parts it comprises, by ceaselessly changing the figures, so that the different positions of the parts, and their mutual relations may determine the rest, and that things may occur as in a movement executed by a single moving living organism. Thus such a state is produced by such an attitude, such positions, such figures; while some other state is produced by some other kind of figures, and so forth. Consequently, the real authors of what is occurring do not seem to be those who carry out the figures, but He who commands them; and He who plans the figures does not do one thing while busying Himself with another, because He is not acting on something different from Himself; He himself is all the things that are done; He here is the figures (formed by the universal movement), He himself there is the resultant passions in the animal so moved and constituted by nature, simultaneously “active” and “passive” as the result of necessary laws. [Ennead IV,4 (28) 33]
As to the difference found in the figures formed by the stars, it could not be other than it is, because the stars do not advance in their course with equal swiftness. As they move according to the laws of reason, and as their relative positions constitute the different attitudes of this great organism (which is the world), and as all the things that occur here below are, by the laws of sympathy related to those that occur on high, it would be proper to inquire whether terrestrial things are the consequences of the celestial things to which they are similar, or whether the figures possess an efficacious power; and in the latter case, whether all figures possess this power, or if figures are formed by stars only; for the same figure does not bear the same significance, and does not exert the same action in different things, because each being seems to have its own proper nature. It may be said that the configuration of certain things amounts to no more than the mere disposition of things; and that the configuration of other things is the same disposition with another figure. If so, influence should be attributed not to the figures, but to the prefigured realities; or rather, to things identical by their essence, and different by their figures; a different influence will also have to be attributed to the object which differs from the others only by the place it occupies. [Ennead IV,4 (28) 34]
But of what does this influence consist? In significance, or in (genuine effective) action? In many cases, the combination, or thing figured, may be said to have both an action, and a significance; in other cases, however, a significance merely. In second place, both the figures and the things figured should be credited with the powers suitable to each; as with dancers, the hand exerts an influence similar to that of the other members; and, returning to figures, these would exert an influence far greater than a hand in dancing. Last, the third (or lowest) degree of power pertains to those things which follow the lead of the figures, carrying out (their significance); just as, returning to the dance-illustrations, the dancer’s limbs, and the parts of those limbs, ultimately do follow the dance-figures; or (taking a more physiological example), as when the nerves and veins of the hand are contracted by the hand’s motions, and participate therein. [Ennead IV,4 (28) 34]
Let us now recall what has already been established. The universe is a single living being by virtue of its unity being sympathetic with itself. The course of its life is regulated by reason; it is entirely in agreement with itself; it has nothing fortuitous, it offers a single order, and a single harmony. Besides, all the (star) figures are each conformed to a reason and to a determinate number. The parts of the universal living beings which constitute this kind of a dance — we mean the figures produced in it, of the parts figured therein, as well as the things derived therefrom — are the very actualization of the universe. Thus the universe lives in the manner we have determined, and its powers contribute to this state according to the nature they have received from the reason that has produced them. The figures are, in some way, the reasons of the universal Living being, the intervals or contrasts (of the parts) of the Living being, the attitudes they take according to the laws of rhythm, and according to the reason of the universe. The beings which by their relative distances produce these figures are the divers members of this living being. The different powers of this living being act without deliberation, as its members, because deliberation is a process foreign to the nature of themselves or to this living being. Aspiration to a single aim is the characteristic of the single living being; but it includes manifold powers. All these different wills aspire to the same end as the single will of the organism, for each part desires some one of the different objects that it contains. Each wishes to possess something of the other’s possessions, and to obtain what it lacks; each experiences a feeling of anger against another, when it is excited against that other; each increases at the expense of another, and begets another. The universe produces all these actions in its parts, but at the same time it seeks the Good, or rather, it contemplates it. It is always the Good that is sought by the right will, which is above passions, and thus accords with the will of the universe. Similarly, servants ascribe many of their actions to the orders received from their master; but the desire of the Good carries them where their own master is carried. Consequently, the sun and the other stars exert what influence they do exert on things here below through contemplation of the intelligible world. [Ennead IV,4 (28) 35]
We shall limit ourselves to the above illustration, which may easily be applied to the rest. The sun does not limit itself to warming terrestrial beings. It makes them also participate in its soul, as far as possible; for it possesses a powerful physical soul. Likewise, the other stars, involuntarily, by a kind of irradiation, transmit to inferior beings somewhat of the (natural) power they possess. Although therefore all things (in the universe) form but a single thing of a particular figure, they offer manifold different dispositions; which different figures themselves each have a characteristic power; for each disposition results in appropriate action. [Ennead IV,4 (28) 35]
Things which appear as a figure themselves possess a characteristic influence, which changes according to the people with which they are brought in contact. Examples of this may be seen daily. Why do certain figures or appearances inspire us with terror, although they have never done us any harm, while others do not produce the same effect on us? Why are some people frightened by certain figures or appearances, while others are frightened by different ones? Because the former’s constitution specially acts on the former people, and the latter on the latter; they could only produce effects in harmony with their nature. One object attracts attention by a particular appearance, and would yet attract attention by a different constitution. If it was its beauty that exerted the power of arousing emotion, why then would this beautiful object move one man, while the other object would move another, if there be no potency in the difference of figure or appearance? It would be unreasonable to admit that colors have a characteristic influence and action, yet deny the same power to figures or appearances. It would, besides, be absurd, to admit the existence of something, but to refuse it all potency. Every being, because of his mere existence, must “act” or “suffer.” Some indeed “act” exclusively, while others both “act” and “suffer.” Substances contain influences independent of their figure or appearance. Terrestrial beings also possess many forces which are derived neither from heat nor cold. The reason is that these beings are endowed with different qualities, that they receive their forms from (“seminal) reasons,” and participate in the powers of nature; such are the peculiar virtues of natural stones, and the surprising effects produced by plants. [Ennead IV,4 (28) 35]
But how shall we explain the enchantments of magic? By the sympathy that things have for each other, the accord of those that are similar, the struggle of those that are contrary, the variety of the powers of the various beings which contribute to the formation of a single organism; for many things are attracted towards each other and are mutually enchanted, without the intervention of a magician. The real magic is the Love that reigns in the universe, with its contrary of Hate. The first magician, him whom men consult to act by the means of his philtres and enchantments, is Love; for it is from the natural mutual love of all things, and from the natural power they have to compel each others’ love, that is derived the efficaciousness of the art of inspiring love by employing enchantments. By this art, magicians bring together the natures which have an innate love for each other; they unite one soul to another as one cross-fertilizes distant plants; by employing (symbolic) figures which possess special virtues; by themselves taking certain attitudes, they noiselessly attract the powers of other beings, and induce them to conspire to unity so much the easier as they themselves are in unity. A being of the same disposition, but located outside of the universe, could neither by magic attractions fascinate, nor by his influence enchain any of the things contained in the world; on the contrary, from the moment that he is not a stranger to the world, he can attract towards himself other beings, knowing their mutual relations and attractions within the universal organism. There are indeed invocations, songs, words, (symbolic) figures, and, for instance, certain sad attitudes and plaintive tones which exert a natural attraction. Their influence extends even to the soul — I mean, the irrational soul; for neither the will nor the reason permit themselves to be subdued by the charms of music. This magic of music does not arouse any astonishment; nevertheless those who play or sing, charm and inspire love unintentionally. Nor does the virtue of prayers depend on their being heard by Beings that make free decisions; for these invocations do not address themselves to free-will. Thus when a man is fascinated by a serpent, he neither feels nor understands the influence exerted on him; he perceives what he has felt only after having experienced it — the governing part of the soul cannot anyway experience anything of the kind. Consequently when an invocation is addressed to a Being, some thing results; either for him who makes this invocation, or for some other person. [Ennead IV,4 (28) 40]
Evidently nature possesses neither hands, nor feet, nor any natural or artificial instrument. For production its only need is a matter on which to work, and which it forms. The works of nature exclude all ideas of mechanical operation; not by any impelling force, nor by using levers nor machines does it produce varied colors, nor draw the outlines of objects. Even the workmen who form wax figures, to whose work the operations of nature are often compared, cannot endue objects with colors without borrowing them from elsewhere. Besides, we must observe that these workmen contain a power which remains immutable, and by the sole means of which they produce their works with their hands. Likewise, nature contains a power which remains immovable as a whole; it has no need of some parts that would remain immovable, and others that move. It is matter alone that undergoes movement, for the forming power is in no way moved. Were the forming power moved, it would no longer be the first motor; the first motor would no longer be nature, but whatever might, in its totality, be immovable. [Ennead III,8 (30) 2]
(3). If anybody were to ask nature why she produces, Nature, if at all willing to listen and answer would say, “You should not have questioned me; you should have tried to understand, keeping silence, as I do; for I am not in the habit of speaking. What were you to understand? Here it is. First, what is produced is the work of my silent speculation, a contemplation effected by my nature; for, myself being born of contemplation, mine is a contemplative nature. Besides, that which in me contemplates, produces a work of contemplation, like geometricians who, while contemplating, describe figures. For it is not in describing figures, but in contemplating, that I let drop from within me the lines which outline the forms of the bodies. I preserve within me the disposition of my mother (the universal Soul), and that of the principles that beget me (the formal ‘reasons’). The latter, indeed, are born of contemplation: I was begotten in the same way. These principles gave birth to me without any action, or the mere fact that they are more powerful reasons, and that they contemplate themselves.” [Ennead III,8 (30) 4]
On the other hand, the intelligible entities are either deprived of feeling, life and intelligence, or they are intelligent. If they be intelligent, they, like truth, fuse with intelligence into the primary Intelligence. In this case we shall have to inquire into the mutual relations of intelligence, intelligible entity, and truth. Do these constitute but one single entity, or two? What in the world could intelligible entities be, if they be without life or intelligence? They are surely neither propositions, axioms, nor words, because in this case they would be enunciating things different from themselves, and would not be things themselves; thus, when you say that the good is beautiful, it would be understood that these two notions are foreign to each other. Nor can we think that the intelligibles — for instance, beauty and justice — are entities that are simple, but completely separate from each other; because the intelligible entity would have lost its unity, and would no longer dwell within a unitary subject. It would be dispersed into a crowd of particular entities, and we would be forced to consider into what localities these divers elements of the intelligible were scattered. Besides, how could intelligence embrace these elements and follow them in their vicissitudes? How could intelligence remain permanent? How could it fix itself on identical objects? What will be the forms or figures of the intelligibles? Will they be like statues of gold, or like images and effigies made of some other material? In this case, the intelligence that would contemplate them would not differ from sensation. What would be the differentiating cause that would make of one justice, and of the other something else? Last, and most important, an assertion that the intelligible entities are external to Intelligence would imply that in thus contemplating objects exterior to itself Intelligence will not gain a genuine knowledge of them, having only a false intuition of them. Since, under this hypothesis, true realities will remain exterior to Intelligence, the latter, while contemplating them, will not possess them; and in knowing them will grasp only their images. Thus reduced to perceiving only images of truth, instead of possessing truth itself, it will grasp only deceptions, and will not reach realities. In this case (intelligence will be in the dilemma) of either acknowledging that it grasps only deceptions, and thus does not possess truth; or intelligence will be ignorant of this, being persuaded it possesses truth, when it really lacks it. By thus doubly deceiving itself, intelligence will by that very fact be still further from the truth. That is, in my opinion, the reason why sensation cannot attain the truth. Sensation is reduced to opinion because it is a receptive power — as indeed is expressed by the word “opinion”; — and because sensation receives something foreign, since the object, from which sensation receives what it possesses remains external to sensation. Therefore, to seek truth outside of intelligence is to deprive intelligence of truth or verity of intelligence. It would amount to annihilating Intelligence, and the truth (which was to dwell within it) will no longer subsist anywhere. [Ennead V,5 (32) 1]
What then is the intelligible line, and where does it exist? It is posterior to number; for unity appears in the line, since this starts from the unity (of the point), and because it has but one dimension (length); now the measure of dimension is not a quantative (entity). Where then does the intelligible Line exist? It exists only in the intelligence that defines it; or, if it be a thing, it is but something intellectual. In the intelligible world, in fact, everything is intellectual, and such as the thing itself is. It is in this same world, likewise, where is made the decision where and how the plane, the solid, and all other figures are to be disposed. For it is not we who create the figures by conceiving them. This is so because the figure of the world is anterior to us, and because the natural figures which are suitable to the productions of nature, are necessarily anterior to the bodies, and in the intelligible world exist in the state of primary figures, without determining limits, for these forms exist in no other subjects; they subsist by themselves, and have no need of extension, because the extension is the attribute of a subject. [Ennead VI,6 (34) 17]
Everywhere, therefore, in essence, is a single (spherical) figure, and each of these figures (which this single figure implicitly contained) has become distinct, either in, or before the animal. When I say that each figure has become distinct, I do not mean that it has become an extension, but that it has been assigned to some particular animal; thus, in the intelligible world, each body has been assigned its own characteristic figure, as, for instance, the pyramid to the fire. Our world seeks to imitate this figure, although it cannot accomplish this, because of matter. There are other figures here below that are analogous to the intelligible figures. [Ennead VI,6 (34) 17]
But are the figures in the living Organism as such, or, if it cannot be doubted that they are in the living Organism, do they anteriorly exist in the Intelligence? If the Organism contained Intelligence, the figures would be in the first degree in the Organism. But as it is the Intelligence that contains the Organism, they are in the first degree in Intelligence. Besides, as the souls are contained in the perfect living Organism, it is one reason more for the priority of the Intelligence. But Plato says, “Intelligence sees the Ideas comprised within the perfect living Organism.” Now, if it see the Ideas contained in the perfect living Organism, Intelligence must be posterior to the latter. By the words “it sees” it should be understood that the existence of the living Organism itself is realized in this vision. Indeed, the Intelligence which sees is not something different from the Organism which is seen; but (in Intelligence) all things form but one. Only, thought has a pure and simple sphere, while the Organism has an animated sphere. [Ennead VI,6 (34) 17]
It may however be objected that if the soul produce the nature of a brute only when she is depraved and degraded, she was not originally destined to produce an ox or a horse; then the (“seminal) reason” of the horse, as well as the horse itself, will be contrary to the nature (of the soul). No: they are inferior to her nature, but they are not contrary to her. From her very origin, the soul was (potentially) the (“seminal) reason” of a horse or a dog. When permitted, the soul which was to beget an animal, produces something better; when hindered, she (only) produces what accords with the circumstances. She resembles the artists who, knowing how to produce several figures, create either the one they have received the order to create, or the one that is most suited to the material at hand. What hinders the (natural and generative) power of the universal Soul, in her quality of universal (“seminal) Reason,” from sketching out the outlines of the body, before the soul powers (or, individual souls) should descend from her into matter? What hinders this sketch from being a kind of preliminary illumination of matter? What would hinder the individual soul from finishing (fashioning the body sketched by the universal Soul), following the lines already traced, and organizing the members pictured by them, and becoming that which she approached by giving herself some particular figure, just as, in a choric ballet, the dancer confines himself to the part assigned to him? [Ennead VI,7 (38) 7]
(Of the essences it contains) it possesses the number, as it is both one and many. It is many, that is, (it is) many potentialities, which are admirable powers, full of force and greatness, because they are pure; powers that are vigorous and veritable because they have no goal at which they are forced to stop; consequently being infinite, that is, supreme Infinity, and Greatness. If then we were to scrutinize this greatness and beauty of being, if by the splendor and light which surround it, we were to distinguish what Intelligence contains, then would we see the efflorescing of quality. With the continuity of actualization we would behold greatness, in quiescent condition. As we have seen one (number), two (quality), and three (greatness), greatness, as the third thing, presents itself with universal quantity. Now, as soon as quality and quantity show themselves to us, they unite, blend into one and the same figure (outward appearance). Then comes difference, which divides quality and quantity, whence arise different qualities, and differences of figure. The presence of identity produces equality, and that of difference, inequality, both in quantity, number, and dimension; hence the circle, the quadrilateral, and the figures composed of unequal things; hence numbers that are similar, and different, even and uneven. [Ennead VI,2 (43) 21]
Thus Essence reveals within itself all the Forms and universality. This could not have been particular; for it could not be single, the double presence of difference and identity demanding it to be simultaneously one and many. Since, from its very origin, Essence is one and many, all the species it contains must consequently simultaneously contain unity and plurality, revealing dimensions, qualities, and different figures; for it is impossible that Essence should lack anything, or should not be complete universality; for it would no longer be universal, if it were not complete. Life, therefore, penetrates every thing; is everywhere present within it. Hence results that from that Life must have been born all living organisms, for since matter and quality are found within their bodies, these also are not lacking. Now, as all living organisms are born within it, and have ever subsisted within it, they were essentially embraced within eternity, yet, taken separately, each of them is a different essence. Taken together they form a unity. Consequently, the complex and synthetic totality of all these living organisms is Intelligence, which, thus containing all (beings), is the perfect and essential living Organism. When Intelligence allows itself to be contemplated by what derives existence from it, Intelligence appears thereto as the intelligible, and receives this predicate properly and truly. [Ennead VI,2 (43) 21]
Bodies may also be distinguished by heat or dryness, wetness or cold, or in any other desired manner, by taking two qualities simultaneously, then considering these things as a composition and mixture, and ceasing at the combination thereof. Or, bodies may be divided in terrestrial bodies, that dwell on the earth, or distribute them according to their forms, and the differences of animals; by classifying not the animals themselves, but their bodies, which are their instruments, as it were. It is proper to establish a classification according to the forms, as it is equally reasonable to classify bodies according to their qualities, such as heat, cold, and so forth. If it be objected that bodies are constituted rather by their qualities, it may be answered that they are just as much classified by their blends, their colors, and their figures. When analyzing sense-being, it is not unreasonable to classify it according to the differences that appear to the senses. This (“being”) does not possess absolute (Essence); it is the totality of the matter and qualities which constitutes the sense-being, since we have said that its hypostatic existence consists in the union of the things perceived by the senses, and that it is according to the testimony of their senses that men believe in the existence of things. [Ennead VI,3 (44) 10]
Now let us consider the triangle, which is formed of three lines. Why should it not belong to quantity? Would it be so, because it is not constituted by three lines merely, but by three lines arranged in some particular manner? But a quadrilateral would also be constituted by four lines arranged in some particular manner. (But being arranged in some particular manner does not hinder a figure from being a quantity). The straight line, indeed, is arranged in some particular manner, and is none the less a quantity. Now if the straight line be not simply a quantity, why could this not also be said of a limited line? For the limit of the line is a point, and the point does not belong to any genus other than the line. Consequently, a limited surface is also a quantity, because it is limited by lines, which even more belong to quantity. If then the limited surface be contained in the genus of quantity, whether the surface be a triangle, a quadrilateral, a hexagon, or any other polygon, all figures whatever will belong to the genus of quantity. But if we assigned the triangle or quadrilateral to the genus of quality merely because we are speaking of some one definite triangle or quadrilateral, nothing would hinder one and the same thing from being subsumed under several categories. A triangle would then be a quantity so far as it was both a general and particular magnitude, and would be a quality by virtue of its possessing a particular form. The same might be predicated of the Triangle in itself because of its possessing a particular form; and so also with the sphere. By following this line of argument, geometry would be turned into a study of qualities, instead of that of quantities, which of course it is. The existing differences between magnitudes do not deprive them of their property of being magnitudes, just as the difference between essences does not affect their essentiality. Besides, every surface is limited, because an infinite surface is impossible. Further, when I consider a difference that pertains to essence, I call it an essential difference. So much the more, on considering figures, I am considering differences of magnitude. For if the differences were not of magnitude, of what would they be differences? If then they be differences of magnitude, the different magnitudes which are derived from differences of magnitude should be classified according to the species constituted by them (when considered in the light of being magnitudes). [Ennead VI,3 (44) 14]