Lectures on Art, Delivered Before the University of Oxford in Hilary Term, 1870

161. Next, here are two examples of the gradated shading expressive of the forms within the outline, by two masters of the chiaroscuro school. The first (S. 12) shows you Lionardo's method of work, both with chalk and the silver point. The second (S. 302), Turner's work in mezzotint; both masters doing their best. Observe that this plate of Turner's, which he worked on so long that it was never published, is of a subject peculiarly depending on effects of mystery and concealment, the fall of the Reuss under the Devil's Bridge on the St. Gothard; (the old bridge; you may still see it under the existing one, which was built since Turner's drawing was made). If ever outline could be dispensed with, you would think it might be so in this confusion of cloud, foam, and darkness. But here is Turner's own etching on the plate (Edu. 35 F), made under the mezzotint; and of all the studies of rock outline made by his hand, it is the most decisive and quietly complete.

162. Again; in the Lionardo sketches, many parts are lost in obscurity, or are left intentionally uncertain and mysterious, even in the light, and you might at first imagine some permission of escape had been here given you from the terrible law of delineation. But the slightest attempts to copy them will show you that the terminal lines are inimitably subtle, unaccusably true, and filled by gradations of shade so determined and measured that the addition of a grain of the lead or chalk as large as the filament of a moth's wing, would make an appreciable difference in them.

This is grievous, you think, and hopeless? No, it is delightful and full of hope: delightful, to see what marvellous things can be done by men; and full of hope, if your hope is the right one, of being one day able to rejoice more in what others have done, than in what you can yourself do, and more in the strength that is for ever above you, than in that you can never attain.

163. But you can attain much, if you will work reverently and patiently, and hope for no success through ill-regulated effort. It is, however, most assuredly at this point of your study that the full strain on your patience will begin. The exercises in line-drawing and flat laying of colour are irksome; but they are definite, and within certain limits, sure to be successful if practised with moderate care. But the expression of form by shadow requires more subtle patience, and involves the necessity of frequent and mortifying failure, not to speak of the self-denial which I said was needful in persons fond of colour, to draw in mere light and shade. If, indeed, you were going to be artists, or could give any great length of time to study, it might be possible for you to learn wholly in the Venetian school, and to reach form through colour. But without the most intense application this is not possible; and practically, it will be necessary for you, as soon as you have gained the power of outlining accurately, and of laying flat colour, to learn to express solid form as shown by light and shade only. And there is this great advantage in doing so, that many forms are more or less disguised by colour, and that we can only represent them completely to others, or rapidly and easily record them for ourselves, by the use of shade alone. A single instance will show you what I mean. Perhaps there are few flowers of which the impression on the eye is more definitely of flat colour, than the scarlet geranium. But you would find, if you were to try to paint it,—first, that no pigment could approach the beauty of its scarlet; and secondly, that the brightness of the hue dazzled the eye, and prevented its following the real arrangement of the cluster of flowers. I have drawn for you here (at least this is a mezzotint from my drawing), a single cluster of the scarlet geranium, in mere light and shade (Edu. 32 B.), and I think you will feel that its domed form, and the flat lying of the petals one over the other, in the vaulted roof of it, can be seen better thus than if they had been painted scarlet.

164. Also this study will be useful to you, in showing how entirely effects of light depend on delineation, and gradation of spaces, and not on methods of shading. And this is the second great practical matter I want you to remember to-day. All effects of light and shade depend not on the method or execution of shadows, but on their rightness of place, form, and depth. There is indeed a loveliness of execution added to the rightness, by the great masters, but you cannot obtain that unless you become one of them. Shadow cannot be laid thoroughly well, any more than lines can be drawn steadily, but by a long-practised hand, and the attempts to imitate the shading of fine draughtsmen, by dotting and hatching, are just as ridiculous as it would be to endeavour to imitate their instantaneous lines by a series of re-touchings. You will often indeed see in Lionardo's work, and in Michael Angelo's, shadow wrought laboriously to an extreme of fineness; but when you look into it, you will find that they have always been drawing more and more form within the space, and never finishing for the sake of added texture, but of added fact. And all those effects of transparency and reflected light, aimed at in common chalk drawings, are wholly spurious. For since, as I told you, all lights are shades compared to higher lights, and lights only as compared to lower ones, it follows that there can be no difference in their quality as such; but that light is opaque when it expresses substance, and transparent when it expresses space; and shade is also opaque when it expresses substance, and transparent when it expresses space. But it is not, even then, transparent in the common sense of that word; nor is its appearance to be obtained by dotting or cross hatching, but by touches so tender as to look like mist. And now we find the use of having Lionardo for our guide. He is supreme in all questions of execution, and in his 28th chapter, you will find that shadows are to be "dolce e sfumose," to be tender, and look as if they were exhaled, or breathed on the paper. Then, look at any of Michael Angelo's finished drawings, or of Correggio's sketches, and you will see that the true nurse of light is in art, as in nature, the cloud; a misty and tender darkness, made lovely by gradation.

165. And how absolutely independent it is of material or method of production, how absolutely dependent on rightness of place and depth,—there are now before you instances enough to prove. Here is Dürer's work in flat colour, represented by the photograph in its smoky brown; Turner's, in washed sepia, and in mezzotint; Lionardo's, in pencil and in chalk; on the screen in front of you a large study in charcoal. In every one of these drawings, the material of shadow is absolutely opaque. But photograph-stain, chalk, lead, ink, or charcoal,—every one of them, laid by the master's hand, becomes full of light by gradation only. Here is a moonlight (Edu. 31 B.), in which you would think the moon shone through every cloud; yet the clouds are mere single dashes of sepia, imitated by the brown stain of a photograph; similarly, in these plates from the Liber Studiorum the white paper becomes transparent or opaque, exactly as the master chooses. Here, on the granite rock of the St. Gothard (S. 302), in white paper made opaque, every light represents solid bosses of rock, or balls of foam. But in this study of twilight (S. 303), the same white paper (coarse old stuff it is, too!) is made as transparent as crystal, and every fragment of it represents clear and far away light in the sky of evening in Italy.

From all which the practical conclusion for you is, that you are never to trouble yourselves with any questions as to the means of shade or light, but only with the right government of the means at your disposal. And it is a most grave error in the system of many of our public drawing-schools, that the students are permitted to spend weeks of labour in giving attractive appearance, by delicacy of texture, to chiaroscuro drawings in which every form is false, and every relation of depth, untrue. A most unhappy form of error; for it not only delays, and often wholly arrests, their advance in their own art; but it prevents what ought to take place correlatively with their executive practice, the formation of their taste by the accurate study of the models from which they draw. And I must so far anticipate what we shall discover when we come to the subject of sculpture, as to tell you the two main principles of good sculpture; first, that its masters think before all other matters of the right placing of masses; secondly, that they give life by flexure of surface, not by quantity of detail; for sculpture is indeed only light and shade drawing in stone.

166. Much that I have endeavoured to teach on this subject has been gravely misunderstood, by both young painters and sculptors, especially by the latter. Because I am always urging them to imitate organic forms, they think if they carve quantities of flowers and leaves, and copy them from the life, they have done all that is needed. But the difficulty is not to carve quantities of leaves. Anybody can do that. The difficulty is, never anywhere to have an unnecessary leaf. Over the arch on the right, you see there is a cluster of seven, with their short stalks springing from a thick stem. Now, you could not turn one of those leaves a hair's-breadth out of its place, nor thicken one of their stems, nor alter the angle at which each slips over the next one, without spoiling the whole as much as you would a piece of melody by missing a note. That is disposition of masses. Again, in the group on the left, while the placing of every leaf is just as skilful, they are made more interesting yet by the lovely undulation of their surfaces, so that not one of them is in equal light with another. And that is so in all good sculpture, without exception. From the Elgin marbles down to the lightest tendril that curls round a capital in the thirteenth century, every piece of stone that has been touched by the hand of a master, becomes soft with under-life, not resembling nature merely in skin-texture, nor in fibres of leaf, or veins of flesh; but in the broad, tender, unspeakably subtle undulation of its organic form.

167. Returning then to the question of our own practice, I believe that all difficulties in method will vanish, if only you cultivate with care enough the habit of accurate observation, and if you think only of making your light and shade true, whether it be delicate or not. But there are three divisions or degrees of truth to be sought for, in light and shade, by three several modes of study, which I must ask you to distinguish carefully.

I. When objects are lighted by the direct rays of the sun, or by direct light entering from a window, one side of them is of course in light, the other in shade, and the forms in the mass are exhibited systematically by the force of the rays falling on it; (those having most power of illumination which strike most vertically;) and note that there is, therefore, to every solid curvature of surface, a necessarily proportioned gradation of light, the gradation on a parabolic solid being different from the gradation on an elliptical or spherical one. Now, when your purpose is to represent and learn the anatomy, or otherwise characteristic forms, of any object, it is best to place it in this kind of direct light, and to draw it as it is seen when we look at it in a direction at right angles to that of the ray. This is the ordinary academical way of studying form. Lionardo seldom practises any other in his real work, though he directs many others in his treatise.

168. The great importance of anatomical knowledge to the painters of the sixteenth century rendered this method of study very frequent with them; it almost wholly regulated their schools of engraving, and has been the most frequent system of drawing in art-schools since (to the very inexpedient exclusion of others). When you study objects in this way,—and it will indeed be well to do so often, though not exclusively,—observe always one main principle. Divide the light from the darkness frankly at first: all over the subject let there be no doubt which is which. Separate them one from the other as they are separated in the moon, or on the world itself, in day and night. Then gradate your lights with the utmost subtilty possible to you; but let your shadows alone, until near the termination of the drawing: then put quickly into them what farther energy they need, thus gaining the reflected lights out of their original flat gloom; but generally not looking much for reflected lights. Nearly all young students (and too many advanced masters) exaggerate them. It is good to see a drawing come out of its ground like a vision of light only; the shadows lost, or disregarded in the vague of space. In vulgar chiaroscuro the shades are so full of reflection that they look as if some one had been walking round the object with a candle, and the student, by that help, peering into its crannies.

169. II. But, in the reality of nature, very few objects are seen in this accurately lateral manner, or lighted by unconfused direct rays. Some are all in shadow, some all in light, some near, and vigorously defined; others dim and faint in aerial distance. The study of these various effects and forces of light, which we may call aerial chiaroscuro, is a far more subtle one than that of the rays exhibiting organic form (which for distinction's sake we may call "formal" chiaroscuro), since the degrees of light from the sun itself to the blackness of night, are far beyond any literal imitation. In order to produce a mental impression of the facts, two distinct methods may be followed:—the first, to shade downwards from the lights, making everything darker in due proportion, until the scale of our power being ended, the mass of the picture is lost in shade. The second, to assume the points of extreme darkness for a basis, and to light everything above these in due proportion, till the mass of the picture is lost in light.

170. Thus, in Turner's sepia drawing "Isis" (Edu. 31), he begins with the extreme light in the sky, and shades down from that till he is forced to represent the near trees and pool as one mass of blackness. In his drawing of the Greta (S. 2), he begins with the dark brown shadow of the bank on the left, and illuminates up from that, till, in his distance, trees, hills, sky, and clouds, are all lost in broad light, so that you can hardly see the distinction between hills and sky. The second of these methods is in general the best for colour, though great painters unite both in their practice, according to the character of their subject. The first method is never pursued in colour but by inferior painters. It is, nevertheless, of great importance to make studies of chiaroscuro in this first manner for some time, as a preparation for colouring; and this for many reasons, which it would take too long to state now. I shall expect you to have confidence in me when I assure you of the necessity of this study, and ask you to make good use of the examples from the Liber Studiorum which I have placed in your Educational series.

171. III. Whether in formal or aerial chiaroscuro, it is optional with the student to make the local colour of objects a part of his shadow, or to consider the high lights of every colour as white. For instance, a chiaroscurist of Lionardo's school, drawing a leopard, would take no notice whatever of the spots, but only give the shadows which expressed the anatomy. And it is indeed necessary to be able to do this, and to make drawings of the forms of things as if they were sculptured, and had no colour. But in general, and more especially in the practice which is to guide you to colour, it is better to regard the local colour as part of the general dark and light to be imitated; and, as I told you at first, to consider all nature merely as a mosaic of different colours, to be imitated one by one in simplicity. But good artists vary their methods according to their subject and material. In general, Dürer takes little account of local colour; but in woodcuts of armorial bearings (one with peacock's feathers I shall get for you some day) takes great delight in it; while one of the chief merits of Bewick is the ease and vigour with which he uses his black and white for the colours of plumes. Also, every great artist looks for, and expresses, that character of his subject which is best to be rendered by the instrument in his hand, and the material he works on. Give Velasquez or Veronese a leopard to paint, the first thing they think of will be its spots; give it to Dürer to engrave, and he will set himself at the fur and whiskers; give it a Greek to carve, and he will only think of its jaws and limbs; each doing what is absolutely best with the means at his disposal.

172. The details of practice in these various methods I will endeavour to explain to you by distinct examples in your Educational series, as we proceed in our work; for the present, let me, in closing, recommend to you once more with great earnestness the patient endeavour to render the chiaroscuro of landscape in the manner of the Liber Studiorum; and this the rather, because you might easily suppose that the facility of obtaining photographs which render such effects, as it seems, with absolute truth and with unapproachable subtilty, superseded the necessity of study, and the use of sketching. Let me assure you, once for all, that photographs supersede no single quality nor use of fine art, and have so much in common with Nature, that they even share her temper of parsimony, and will themselves give you nothing valuable that you do not work for. They supersede no good art, for the definition of art is "human labour regulated by human design," and this design, or evidence of active intellect in choice and arrangement, is the essential part of the work; which so long as you cannot perceive, you perceive no art whatsoever; which when once you do perceive, you will perceive also to be replaceable by no mechanism. But, farther, photographs will give you nothing you do not work for. They are invaluable for record of some kinds of facts, and for giving transcripts of drawings by great masters; but neither in the photographed scene, nor photographed drawing, will you see any true good, more than in the things themselves, until you have given the appointed price in your own attention and toil. And when once you have paid this price, you will not care for photographs of landscape. They are not true, though they seem so. They are merely spoiled nature. If it is not human design you are looking for, there is more beauty in the next wayside bank than in all the sun-blackened paper you could collect in a lifetime. Go and look at the real landscape, and take care of it; do not think you can get the good of it in a black stain portable in a folio. But if you care for human thought and passion, then learn yourselves to watch the course and fall of the light by whose influence you live, and to share in the joy of human spirits in the heavenly gifts of sunbeam and shade. For I tell you truly, that to a quiet heart, and healthy brain, and industrious hand, there is more delight, and use, in the dappling of one wood-glade with flowers and sunshine, than to the restless, heartless, and idle could be brought by a panorama of a belt of the world, photographed round the equator.

LECTURE VII

COLOUR

173. To-day I must try to complete our elementary sketch of schools of art, by tracing the course of those which were distinguished by faculty of colour, and afterwards to deduce from the entire scheme advisable methods of immediate practice.

You remember that, for the type of the early schools of colour, I chose their work in glass; as for that of the early schools of chiaroscuro, I chose their work in clay.

I had two reasons for this. First, that the peculiar skill of colourists is seen most intelligibly in their work in glass or in enamel; secondly, that Nature herself produces all her loveliest colours in some kind of solid or liquid glass or crystal. The rainbow is painted on a shower of melted glass, and the colours of the opal are produced in vitreous flint mixed with water; the green and blue, and golden or amber brown of flowing water is in surface glassy, and in motion "splendidior vitro." And the loveliest colours ever granted to human sight—those of morning and evening clouds before or after rain—are produced on minute particles of finely-divided water, or perhaps sometimes ice. But more than this. If you examine with a lens some of the richest colours of flowers, as, for instance, those of the gentian and dianthus, you will find their texture is produced by a crystalline or sugary frost-work upon them. In the lychnis of the high Alps, the red and white have a kind of sugary bloom, as rich as it is delicate. It is indescribable; but if you can fancy very powdery and crystalline snow mixed with the softest cream, and then dashed with carmine, it may give you some idea of the look of it. There are no colours, either in the nacre of shells, or the plumes of birds and insects, which are so pure as those of clouds, opal, or flowers; but the force of purple and blue in some butterflies, and the methods of clouding, and strength of burnished lustre, in plumage like the peacock's, give them more universal interest; in some birds, also, as in our own kingfisher, the colour nearly reaches a floral preciousness. The lustre in most, however, is metallic rather than vitreous; and the vitreous always gives the purest hue. Entirely common and vulgar compared with these, yet to be noticed as completing the crystalline or vitreous system, we have the colours of gems. The green of the emerald is the best of these; but at its best is as vulgar as house-painting beside the green of bird's plumage or of clear water. No diamond shows colour so pure as a dewdrop; the ruby is like the pink of an ill-dyed and half-washed-out print, compared to the dianthus; and the carbuncle is usually quite dead unless set with a foil, and even then is not prettier than the seed of a pomegranate. The opal is, however, an exception. When pure and uncut in its native rock, it presents the most lovely colours that can be seen in the world, except those of clouds.

We have thus in nature, chiefly obtained by crystalline conditions, a series of groups of entirely delicious hues; and it is one of the best signs that the bodily system is in a healthy state when we can see these clearly in their most delicate tints, and enjoy them fully and simply, with the kind of enjoyment that children have in eating sweet things.

174. Now, the course of our main colour schools is briefly this:—First we have, returning to our hexagonal scheme, line; then spaces filled with pure colour; and then masses expressed or rounded with pure colour. And during these two stages the masters of colour delight in the purest tints, and endeavour as far as possible to rival those of opals and flowers. In saying "the purest tints," I do not mean the simplest types of red, blue, and yellow, but the most pure tints obtainable by their combinations.

175. You remember I told you, when the colourists painted masses or projecting spaces, they, aiming always at colour, perceived from the first and held to the last the fact that shadows, though of course darker than the lights with reference to which they are shadows, are not therefore necessarily less vigorous colours, but perhaps more vigorous. Some of the most beautiful blues and purples in nature, for instance, are those of mountains in shadow against amber sky; and the darkness of the hollow in the centre of a wild rose is one glow of orange fire, owing to the quantity of its yellow stamens. Well, the Venetians always saw this, and all great colourists see it, and are thus separated from the non-colourists or schools of mere chiaroscuro, not by difference in style merely, but by being right while the others are wrong. It is an absolute fact that shadows are as much colours as lights are; and whoever represents them by merely the subdued or darkened tint of the light, represents them falsely. I particularly want you to observe that this is no matter of taste, but fact. If you are especially sober-minded, you may indeed choose sober colours where Venetians would have chosen gay ones; that is a matter of taste; you may think it proper for a hero to wear a dress without patterns on it, rather than an embroidered one; that is similarly a matter of taste: but, though you may also think it would be dignified for a hero's limbs to be all black, or brown, on the shaded side of them, yet, if you are using colour at all, you cannot so have him to your mind, except by falsehood; he never, under any circumstances, could be entirely black or brown on one side of him.