(67) Timaeus: Concerning colors, then, the following explanation will be the most probable and worthy of a judicious account. Of the particles which fly off from the rest and strike into the visual stream some are smaller, some larger, and some equal to the particles of the stream itself; those, then, that are equal are imperceptible, and we term them “transparent”; while the larger and smaller particles—of which the one kind contracts, the other dilates the visual stream—are akin to the particles of heat and cold which affect the flesh,

(68) Timaeus: which is midway between these reaches to the liquid of the eyes and is mingled therewith, it is not brilliant but, owing to the blending of the fire's ray through the moisture, it gives off a sanguine color, and we give it the name of “red.” And “bright” color when blended with red and white becomes “yellow.” But in what proportions the colors are blended it were foolish to declare, even if one knew, seeing that in such matters one could not properly adduce any necessary ground or probable reason. Red blended with black and white makes “purple”;

(68) Timaeus: and dissolving the very passages of the eyes causes a volume of fire and water to pour from them, which we call “tears.” And this moving body, being itself fire, meets fire from the opposite direction; and as the one firestream is leaping out like a flash, and the other passing in and being quenched in the moisture, in the resultant mixture colors of all kinds are produced. This sensation we term “dazzling” and the object which causes it “bright” or “brilliant.” Again, when the kind of fire

(67) Timaeus: and that large motion produces “loud” sound, and motion of the opposite kind “soft” sound. The subject of concords of sounds must necessarily be treated in a later part of our exposition. We have still remaining a fourth kind of sensation, which we must divide up seeing that it embraces numerous varieties, which, as a whole, we call “colors.” This consists of a flame which issues from the several bodies, and possesses particles so proportioned to the visual stream as to produce sensation; and as regards the visual stream, we have already stated merely the causes which produced it.

(68) Timaeus: but when these colors are mixed and more completely burned, and black is blended therewith, the result is “violet.” “Chestnut” comes from the blending of yellow and grey; and “grey” from white and black; and “ochre” from white mixed with yellow. And when white is combined with “bright” and is steeped in deep black it turns into a “dark blue” color; and dark blue mixed with white becomes “light blue”; and chestnut with black becomes “green.” As to the rest, it is fairly clear from these examples

(121) Outward colors arise from the light of sun and stars, The light that lights the eye is also the heart's Light; The eye's light proceeds from the Light of the heart. But the light that lights the heart is the Light of God, At night there is no light, and colors are not seen; Hence we know what light is by its opposite, darkness. At night no colors are visible, for light is lacking. How can color be the attribute of dark blackness? Looking on light is the same as looking on colors; Opposite shows up opposite, as a Frank a Negro.

(11) I think, in fact, that Plato had this in mind where he justly speaks of the Images of Real Existents "entering and passing out": these particular words are not used idly: he wishes us to grasp the precise nature of the relation between Matter and the Ideas.

The difficulty on this point is not really that which presented itself to most of our predecessors- how the Ideas enter into Matter- it is rather the mode of their presence in it.

It is in fact strange at sight that Matter should remain itself intact, unaffected by Ideal-forms present within it, especially seeing that these are affected by each other. It is surprising, too, that the entrant Forms should regularly expel preceding shapes and qualities, and that the modification should affect what is a compound and this, again, not a haphazard but precisely where there is need of the incoming or outgoing of some certain Ideal-form, the compound being deficient through the absence of a particular principle whose presence will complete it.

But the reason is that the fundamental nature of Matter can take no increase by anything entering it, and no decrease by any withdrawal: what from the beginning it was, it remains. It is not like those things whose lack is merely that of arrangement and order which can be supplied without change of substance as when we dress or decorate something bare or ugly.

But where the bringing to order must cut through to the very nature, the base original must be transmuted: it can leave ugliness for beauty only by a change of substance. Matter, then, thus brought to order must lose its own nature in the supreme degree unless its baseness is an accidental: if it is base in the sense of being Baseness the Absolute, it could never participate in order, and, if evil in the sense of being Evil the Absolute, it could never participate in good.

We conclude that Matter's participation in Idea is not by way of modification within itself: the process is very different; it is a bare seeming. Perhaps we have here the solution of the difficulty as to how Matter, essentially evil, can be reaching towards The Good: there would be no such participation as would destroy its essential nature. Given this mode of pseudo-participation- in which Matter would, as we say, retain its nature, unchanged, always being what it has essentially been- there is no longer any reason to wonder as to how while essentially evil, it yet participates in Idea: for, by this mode, it does not abandon its own character: participation is the law, but it participates only just so far as its essence allows. Under a mode of participation which allows it to remain on its own footing, its essential nature stands none the less, whatsoever the Idea, within that limit, may communicate to it: it is by no means the less evil for remaining immutably in its own order. If it had authentic participation in The Good and were veritably changed, it would not be essentially evil.

In a word, when we call Matter evil we are right only if we mean that it is not amenable to modification by The Good; but that means simply that it is subject to no modification whatever.

(45) Timaeus: and they compressed the whole substance, and especially the center, of the eyes, so that they occluded all other fire that was coarser and allowed only this pure kind of fire to filter through. So whenever the stream of vision is surrounded by midday light, it flows out like unto like, and coalescing therewith it forms one kindred substance along the path of the eyes' vision, wheresoever the fire which streams from within collides with an obstructing object without. And this substance, having all become similar in its properties because of its similar nature,

(80) Timaeus: and derived from kindred substances,—some from fruits, and some from cereals, which God planted for us for the express purpose of serving as food, —they get all varieties of colors because of their commingling, but red is the color that runs through them most of all, it being a natural product of the action of the fire in dividing the liquid food and imprinting itself thereon. Wherefore the color of the stream which flows through the body acquired an appearance such as we have described; and this stream we call “blood,” which is the nutriment of the flesh

(1) We undertook to discuss the question whether sight is possible in the absence of any intervening medium, such as air or some other form of what is known as transparent body: this is the time and place.

It has been explained that seeing and all sense-perception can occur only through the medium of some bodily substance, since in the absence of body the soul is utterly absorbed in the Intellectual Sphere. Sense-perception being the gripping not of the Intellectual but of the sensible alone, the soul, if it is to form any relationship of knowledge, or of impression, with objects of sense, must be brought in some kind of contact with them by means of whatever may bridge the gap.

The knowledge, then, is realized by means of bodily organs: through these, which are almost of one growth with it, being at least its continuations, it comes into something like unity with the alien, since this mutual approach brings about a certain degree of identity .

Admitting, then, that some contact with an object is necessary for knowing it, the question of a medium falls to the ground in the case of things identified by any form of touch; but in the case of sight- we leave hearing over for the present- we are still in doubt; is there need of some bodily substance between the eye and the illumined object?

No: such an intervening material may be a favouring circumstance, but essentially it adds nothing to seeing power. ! Dense bodies, such as clay, actually prevent sight; the less material the intervening substance is, the more clearly we see; the intervening substance, then, is a hindrance, or, if not that, at least not a help.

It will be objected that vision implies that whatever intervenes between seen and seer must first experience the object and be, as it were, shaped to it; we will be reminded that anyone facing to the object from the side opposite to ourselves sees it equally; we will be asked to deduce that if all the space intervening between seen and seer did not carry the impression of the object we could not receive it.

But all the need is met when the impression reaches that which is adapted to receive it; there is no need for the intervening space to be impressed. If it is, the impression will be of quite another order: the rod between the fisher's hand and the torpedo fish is not affected in the same way as the hand that feels the shock. And yet there too, if rod and line did not intervene, the hand would not be affected- though even that may be questioned, since after all the fisherman, we are told, is numbed if the torpedo merely lies in his net.

The whole matter seems to bring us back to that sympathy of which we have treated. If a certain thing is of a nature to be sympathetically affected by another in virtue of some similitude between them, then anything intervening, not sharing in that similitude, will not be affected, or at least not similarly. If this be so, anything naturally disposed to be affected will take the impression more vividly in the absence of intervening substance, even of some substance capable, itself, of being affected.

(67) Timaeus: and to the astringent particles which affect the tongue, and to all the heating particles which we call “bitter“ with these “white” and “black” are really identical affections, occurring in a separate class of sensation, although they appear different for the causes stated. These, therefore, are the names we must assign to them: that which dilates the visual stream is “white” and the opposite thereof “black“ ; and the more rapid motion, being that of a different species of fire, which strikes upon the visual stream and dilates it as far as to the eyes, and penetrating

(50) Timaeus: coming severally into existence, and “wherefrom” in turn they perish, in describing that and that alone should we employ the terms “this” and “that”; whereas, in describing what is “suchlike”—hot, for instance, or white, or any of the opposite qualities, or any compounds thereof—we ought never to apply to it any of these terms. But we must bestir ourselves to explain this matter again yet more clearly. Now imagine that a man were to model all possible figures out of gold, and were then to proceed without cessation to remodel each of these into every other, then, if someone were to point to one of the figures and ask what it is,

(7) Consider the act of ocular vision:

There are two elements here; there is the form perceptible to the sense and there is the medium by which the eye sees that form. This medium is itself perceptible to the eye, distinct from the form to be seen, but the cause of the seeing; it is perceived at the one stroke in that form and on it and, hence, is not distinguished from it, the eye being held entirely by the illuminated object. When on the contrary this medium presents itself alone it is seen directly- though even then actual sight demands some solid base; there must be something besides the medium which, unless embracing some object, eludes perception; thus the light inherent to the sun would not be perceived but for the solidity of the mass. If it is objected that the sun is light entire, this would only be a proof of our assertion: no other visible form will contain light which must, then, have no other property than that of visibility, and in fact all other visible objects are something more than light alone.

So it is with the act of vision in the Intellectual Principle.

This vision sees, by another light, the objects illuminated by the First Principle: setting itself among them, it sees veritably; declining towards the lower Nature, that upon which the light from above rests, it has less of that vision. Passing over the visible and looking to the medium by which it sees, then it holds the Light and the source of Light.

But since the Intellectual-Principle is not to see this light as something external we return to our analogy; the eye is not wholly dependent upon an outside and alien light; there is an earlier light within itself, a more brilliant, which it sees sometimes in a momentary flash. At night in the darkness a gleam leaps from within the eye: or again we make no effort to see anything; the eyelids close; yet a light flashes before us; or we rub the eye and it sees the light it contains. This is sight without the act, but it is the truest seeing, for it sees light whereas its other objects were the lit not the light.

It is certainly thus that the Intellectual-Principle, hiding itself from all the outer, withdrawing to the inmost, seeing nothing, must have its vision- not of some other light in some other thing but of the light within itself, unmingled, pure, suddenly gleaming before it;

(13) Further, they must explain in what sense they hold that Matter tends to slip away from its form . Can we conceive it stealing out from stones and rocks or whatever else envelops it?

And of course they cannot pretend that Matter in some cases rebels and sometimes not. For if once it makes away of its own will, why should it not always escape? If it is fixed despite itself, it must be enveloped by some Ideal-Form for good and all. This, however, leaves still the question why a given portion of Matter does not remain constant to any one given form: the reason lies mainly in the fact that the Ideas are constantly passing into it.

In what sense, then, is it said to elude form?

By very nature and for ever?

But does not this precisely mean that it never ceases to be itself, in other words that its one form is an invincible formlessness? In no other sense has Plato's dictum any value to those that invoke it.

Matter is "the receptacle and nurse of all generation."

Now if Matter is such a receptacle and nurse, all generation is distinct from it; and since all the changeable lies in the realm of generation, Matter, existing before all generation, must exist before all change.

"Receptacle" and "nurse"; then it "retains its identity; it is not subject to modification. Similarly if it is" "the ground on which individual things appear and disappear," and so, too, if it is a "place, a base." Where Plato describes and identifies it as "a ground to the ideas" he is not attributing any state to it; he is probing after its distinctive manner of being.

And what is that?

This which we think of as a Nature-Kind cannot be included among Existents but must utterly rebel from the Essence of Real Beings and be therefore wholly something other than they- for they are Reason-Principles and possess Authentic Existence- it must inevitably, by virtue of that difference, retain its integrity to the point of being permanently closed against them and, more, of rejecting close participation in any image of them.

Only on these terms can it be completely different: once it took any Idea to hearth and home, it would become a new thing, for it would cease to be the thing apart, the ground of all else, the receptacle of absolutely any and every form. If there is to be a ceaseless coming into it and going out from it, itself must be unmoved and immune in all the come and go. The entrant Idea will enter as an image, the untrue entering the untruth.

But, at least, in a true entry?

No: How could there be a true entry into that which, by being falsity, is banned from ever touching truth?

Is this then a pseudo-entry into a pseudo-entity- something merely brought near, as faces enter the mirror, there to remain just as long as the people look into it?

Yes: if we eliminated the Authentic Existents from this Sphere nothing of all now seen in sense would appear one moment longer.

Here the mirror itself is seen, for it is itself an Ideal-Form of a Kind ; but bare Matter, which is no Idea, is not a visible thing; if it were, it would have been visible in its own character before anything else appeared upon it. The condition of Matter may be illustrated by that of air penetrated by light and remaining, even so, unseen because it is invisible whatever happens.

The reflections in the mirror are not taken to be real, all the less since the appliance on which they appear is seen and remains while the images disappear, but Matter is not seen either with the images or without them. But suppose the reflections on the mirror remaining and the mirror itself not seen, we would never doubt the solid reality of all that appears.

If, then, there is, really, something in a mirror, we may suppose objects of sense to be in Matter in precisely that way: if in the mirror there is nothing, if there is only a seeming of something, then we may judge that in Matter there is the same delusion and that the seeming is to be traced to the Substantial-Existence of the Real-Beings, that Substantial-Existence in which the Authentic has the real participation while only an unreal participation can belong to the unauthentic since their condition must differ from that which they would know if the parts were reversed, if the Authentic Existents were not and they were.

(507) additional nature in order that the one may be able to hear and the other to be heard? Nothing of the sort. No, indeed, I replied; and the same is true of most, if not all, the other senses—you would not say that any of them requires such an addition? Certainly not. But you see that without the addition of some other nature there is no seeing or being seen? How do you mean? Sight being, as I conceive, in the eyes, and he who has eyes wanting to see; colour being also present in them, still unless there be a third nature specially adapted to the purpose, the owner of the eyes will see nothing and the colours will be invisible. Of what nature are you speaking? Of that which you term light, I replied. True, he said. Noble, then, is the bond which links together sight and visibility, and great beyond other bonds by no small difference of nature; for light is their bond, and light is no ignoble thing? Nay, he said, the reverse of ignoble. And which, I said, of the gods in heaven would you say was the lord of this element? Whose is that light which makes the eye to see perfectly and the visible to appear? You mean the sun, as you and all mankind say. May not the relation of sight to this deity be described as follows? How?

(7) We can scarcely do better, in fine, than follow Plato.

Thus:

In the universe as a whole there must necessarily be such a degree of solidity, that is to say, of resistance, as will ensure that the earth, set in the centre, be a sure footing and support to the living beings moving over it, and inevitably communicate something of its own density to them: the earth will possess coherence by its own unaided quality, but visibility by the presence of fire: it will contain water against the dryness which would prevent the cohesion of its particles; it will hold air to lighten its bulky matters; it will be in contact with the celestial fire- not as being a member of the sidereal system but by the simple fact that the fire there and our earth both belong to the ordered universe so that something of the earth is taken up by the fire as something of the fire by the earth and something of everything by everything else.

This borrowing, however, does not mean that the one thing taking-up from the other enters into a composition, becoming an element in a total of both: it is simply a consequence of the kosmic fellowship; the participant retains its own being and takes over not the thing itself but some property of the thing, not air but air's yielding softness, not fire but fire's incandescence: mixing is another process, a complete surrender with a resultant compound not, as in this case, earth- remaining earth, the solidity and density we know- with something of fire's qualities superadded.

We have authority for this where we read:

"At the second circuit from the earth, God kindled a light": he is speaking of the sun which, elsewhere, he calls the all-glowing and, again, the all-gleaming: thus he prevents us imagining it to be anything else but fire, though of a peculiar kind; in other words it is light, which he distinguishes from flame as being only modestly warm: this light is a corporeal substance but from it there shines forth that other "light" which, though it carries the same name, we pronounce incorporeal, given forth from the first as its flower and radiance, the veritable "incandescent body." Plato's word earthy is commonly taken in too depreciatory a sense: he is thinking of earth as the principle of solidity; we are apt to ignore his distinctions and think of the concrete clay.

Fire of this order, giving forth this purest light, belongs to the upper realm, and there its seat is fixed by nature; but we must not, on that account, suppose the flame of earth to be associated with the beings of that higher sphere.

No: the flame of this world, once it has attained a certain height, is extinguished by the currents of air opposed to it. Moreover, as it carries an earthy element on its upward path, it is weighed downwards and cannot reach those loftier regions. It comes to a stand somewhere below the moon- making the air at that point subtler- and its flame, if any flame can persist, is subdued and softened, and no longer retains its first intensity, but gives out only what radiance it reflects from the light above.

And it is that loftier light- falling variously upon the stars; to each in a certain proportion- that gives them their characteristic differences, as well in magnitude as in colour; just such light constitutes also the still higher heavenly bodies which, however, like clear air, are invisible because of the subtle texture and unresisting transparency of their material substance and also by their very distance.

(524) Is not their mode of operation on this wise—the sense which is concerned with the quality of hardness is necessarily concerned also with the quality of softness, and only intimates to the soul that the same thing is felt to be both hard and soft? You are quite right, he said. And must not the soul be perplexed at this intimation which the sense gives of a hard which is also soft? What, again, is the meaning of light and heavy, if that which is light is also heavy, and that which is heavy, light? Yes, he said, these intimations which the soul receives are very curious and require to be explained. Yes, I said, and in these perplexities the soul naturally summons to her aid calculation and intelligence, that she may see whether the several objects announced to her are one or two. True. And if they turn out to be two, is not each of them one and different? Certainly. And if each is one, and both are two, she will conceive the two as in a state of division, for if there were undivided they could only be conceived of as one? True. The eye certainly did see both small and great, but only in a confused manner; they were not distinguished. Yes. Whereas the thinking mind, intending to light up the chaos, was compelled to reverse the process, and look at small and great as separate and not confused. Very true. Was not this the beginning of the enquiry ‘What is great?’ and ‘What is small?’ Exactly so. And thus arose the distinction of the visible and the intelligible.

(45) Timaeus: distributes the motions of every object it touches, or whereby it is touched, throughout all the body even unto the Soul, and brings about that sensation which we now term “seeing.” But when the kindred fire vanishes into night, the inner fire is cut off; for when it issues forth into what is dissimilar it becomes altered in itself and is quenched, seeing that it is no longer of like nature with the adjoining air, since that air is devoid of fire. Wherefore it leaves off seeing, and becomes also an inducement to sleep. For the eyelids —whose structure the Gods devised

(508) Neither sight nor the eye in which sight resides is the sun? No. Yet of all the organs of sense the eye is the most like the sun? By far the most like. And the power which the eye possesses is a sort of effluence which is dispensed from the sun? Exactly. Then the sun is not sight, but the author of sight who is recognised by sight? True, he said. And this is he whom I call the child of the good, whom the good begat in his own likeness, to be in the visible world, in relation to sight and the things of sight, what the good is in the intellectual world in relation to mind and the things of mind: Will you be a little more explicit? he said. Why, you know, I said, that the eyes, when a person directs them towards objects on which the light of day is no longer shining, but the moon and stars only, see dimly, and are nearly blind; they seem to have no clearness of vision in them? Very true. But when they are directed towards objects on which the sun shines, they see clearly and there is sight in them? Certainly. And the soul is like the eye: when resting upon that on which truth and being shine, the soul perceives and understands, and is radiant with intelligence; but when turned towards the twilight of becoming and perishing, then she has opinion only, and goes blinking about, and is first of one opinion and then of another, and seems to have no intelligence? Just so.

(16) When each of the entities bound up with the pseudo-substance is taken apart from the rest, the name of Quality is given to that one among them, by which without pointing to essence or quantity or motion we signify the distinctive mark, the type or aspect of a thing- for example, the beauty or ugliness of a body. This beauty- need we say?- is identical in name only with Intellectual Beauty: it follows that the term "Quality" as applied to the Sensible and the Intellectual is necessarily equivocal; even blackness and whiteness are different in the two spheres.

But the beauty in the germ, in the particular Reason-Principle- is this the same as the manifested beauty, or do they coincide only in name? Are we to assign this beauty- and the same question applies to deformity in the soul- to the Intellectual order, or to the Sensible? That beauty is different in the two spheres is by now clear. If it be embraced in Sensible Quality, then virtue must also be classed among the qualities of the lower. But merely some virtues will take rank as Sensible, others as Intellectual qualities.

It may even be doubted whether the arts, as Reason-Principles, can fairly be among Sensible qualities; Reason-Principles, it is true, may reside in Matter, but "matter" for them means Soul. On the other hand, their being found in company with Matter commits them in some degree to the lower sphere. Take the case of lyrical music: it is performed upon strings; melody, which may be termed a part of the art, is sensuous sound- though, perhaps, we should speak here not of parts but of manifestations : yet, called manifestations, they are nonetheless sensuous. The beauty inherent in body is similarly bodiless; but we have assigned it to the order of things bound up with body and subordinate to it.

Geometry and arithmetic are, we shall maintain, of a twofold character; in their earthly types they rank with Sensible Quality, but in so far as they are functions of pure Soul, they necessarily belong to that other world in close proximity to the Intellectual. This, too, is in Plato's view the case with music and astronomy.

The arts concerned with material objects and making use of perceptible instruments and sense-perception must be classed with Sensible Quality, even though they are dispositions of the Soul, attendant upon its apostasy.

There is also every reason for consigning to this category the practical virtues whose function is directed to a social end: these do not isolate Soul by inclining it towards the higher; their manifestation makes for beauty in this world, a beauty regarded not as necessary but as desirable.

On this principle, the beauty in the germ, and still more the blackness and whiteness in it, will be included among Sensible Qualities.

Are we, then, to rank the individual soul, as containing these Reason-Principles, with Sensible Substance? But we do not even identify the Principles with body; we merely include them in Sensible Quality on the ground that they are connected with body and are activities of body. The constituents of Sensible Substance have already been specified; we have no intention whatever of adding to them Substance bodiless.

As for Qualities, we hold that they are invariably bodiless, being affections arising within Soul; but, like the Reason-Principles of the individual soul, they are associated with Soul in its apostasy, and are accordingly counted among the things of the lower realm: such affections, torn between two worlds by their objects and their abode, we have assigned to Quality, which is indeed not bodily but manifested in body.

But we refrain from assigning Soul to Sensible Substance, on the ground that we have already referred to Quality those affections of Soul which are related to body. On the contrary, Soul, conceived apart from affection and Reason-Principle, we have restored to its origin, leaving in the lower realm no substance which is in any sense Intellectual.