The light of the picture, as I observed, ought to be of a warm colour; for though white may be used for the principal light, as was the practice of many of the Dutch and Flemish painters, yet it is better to suppose that white illumined by the yellow rays of the setting sun, as was the manner of Titian. The superiority of which manner is never more striking than when in a collection of pictures we chance to see a portrait of Titian's hanging by the side of a Flemish picture (even though that should be of the hand of Vandyke), which, however admirable in other respects, becomes cold and grey in the comparison.
The illuminated parts of objects are in nature of a warmer tint than those that are in the shade; what I have recommended, therefore, is no more than that the same conduct be observed in the whole, which is acknowledged to be necessary in every individual part. It is presenting to the eye the same effect as that which it has been accustomed to feel, which, in this case, as in every other, will always produce beauty; no principle, therefore, in our art can be more certain, or is derived from a higher source.
When I just now mentioned of the supposed reason why Ariadne has part of her drapery red, gives me occasion here to observe, that this favourite quality of giving objects relief, and which De Piles and all the Critics have considered as a requisite of the utmost importance, was not one of those objects which much engaged the attention of Titian; painters of an inferior rank have far exceeded him in producing this effect. This was a great object of attention, when art was in its infant state; as it is at present with the vulgar and ignorant, who feel the highest satisfaction in seeing a figure, which, as they say, looks as if they could walk round it. But however low I may rate this pleasure of deception, I should not oppose it, did it not oppose itself to a quality of a much higher kind, by counteracting entirely that fulness of manner which is so difficult to express in words, but which is found in perfection in the best works of Correggio, and we may add, of Rembrandt. This effect is produced by melting and losing the shadows in a ground still darker than those shadows; whereas that relief is produced by opposing and separating the ground from the figure, either by light, or shadow, or colour. This conduct of in-laying, as it may be called, figures on their ground, in order to produce relief, was the practice of the old Painters, such as Andrea Mantegna, Pietro Perugino, and Albert Durer; and to these we may add the first manner of Lionardo da Vinci, Giorgione, and even Correggio; but these three were among the first who began to correct themselves in dryness of style, by no longer considering relief as a principal object. As those two qualities, relief, and fulness of effect, can hardly exist together, it is not very difficult to determine to which we ought to give the preference. An artist is obliged forever to hold a balance in his hand, by which he must determine the value of different qualities; that, when some fault must be committed, he may choose the least. Those painters who have best understood the art of producing a good effect have adopted one principle that seems perfectly conformable to reason; that a part may be sacrificed for the good of the whole. Thus, whether the masses consist of light or shadow, it is necessary that they should be compact and of a pleasing shape: to this end some parts may be made darker and some lighter, and reflections stronger than nature would warrant. Paul Veronese took great liberties of this kind. It is said, that being once asked why certain figures were painted in shade, as no cause was seen in the picture itself, he turned off the inquiry by answering, "Una nuevola che passa"—a cloud is passing, which has overshadowed them.
But I cannot give a better instance of this practice than a picture which I have of Rubens; it is a representation of a Moonlight. Rubens has not only diffused more light over the picture than is in nature, but has bestowed on it those warm glowing colours by which his works are so much distinguished. It is so unlike what any other painters have given us of Moonlight, that it might be easily mistaken, if he had not likewise added stars, for a fainter setting sun. Rubens thought the eye ought to be satisfied in this case, above all other considerations; he might, indeed, have made it more natural, but it would have been at the expense of what he thought of much greater consequence—the harmony proceeding from the contrast and variety of colours.
This same picture will furnish us with another instance, where we must depart from nature for a greater advantage. The Moon in this picture does not preserve so great a superiority in regard to its lightness over the subject which it illumines as it does in nature; this is likewise an intended deviation, and for the same reason. If Rubens had preserved the same scale of gradation of light between the Moon and the objects which is found in nature, the picture must have consisted of one small spot of light only, and at a little distance from the picture nothing but this spot would have been seen. It may be said, indeed, that this being the case, it is a subject that ought not to be painted; but then, for the same reason, neither armour, nor anything shining, ought ever to be painted; for though pure white is used in order to represent the greatest light of shining objects, it will not in the picture preserve the same superiority over flesh as it has in nature, without keeping that flesh colour of a very low tint. Rembrandt, who thought it of more consequence to paint light than the objects that are seen by it, has done this in a picture of Achilles which I have. The head is kept down to a very low tint, in order to preserve this due gradation and distinction between the armour and the face; the consequence of which is, that, upon the whole, the picture is too black. Surely too much is sacrificed here to this narrow conception of nature; allowing the contrary conduct a fault, yet it must be acknowledged a less fault than making a picture so dark that it cannot be seen without a peculiar light, and then with difficulty. The merit or demerit of the different conduct of Rubens and Rembrandt in those instances which I have given, is not to be determined by the narrow principles of nature, separated from its effect on the human mind. Reason and common-sense tell us, that before, and above all other considerations, it is necessary that the work should be seen, not only without difficulty or inconvenience, but with pleasure and satisfaction; and every obstacle which stands in the way of this pleasure and convenience must be removed.
The tendency of this Discourse, with the instances which have been given, is not so much to place the Artist above rules, as to teach him their reason; to prevent him from entertaining a narrow, confined conception of Art; to clear his mind from a perplexed variety of rules and their exceptions, by directing his attention to an intimate acquaintance with the passions and affections of the mind, from which all rules arise, and to which they are all referable. Art effects its purpose by their means; an accurate knowledge, therefore, of those passions and dispositions of the mind is necessary to him who desires to affect them upon sure and solid principles.
A complete essay or inquiry into the connection between the rules of Art and the eternal and immutable dispositions of our passions would be indeed going at once to the foundation of criticism; [10] but I am too well convinced what extensive knowledge, what subtle and penetrating judgment, would be required to engage in such an undertaking; it is enough for me if, in the language of painters, I have produced a slight sketch of a part of this vast composition, but that sufficiently distinct to show the usefulness of such a theory, and its practicability.
Before I conclude, I cannot avoid making one observation on the pictures now before us. I have observed, that every candidate has copied the celebrated invention of Timanthes in hiding the face of Agamemnon in his mantle; indeed, such lavish encomiums have been bestowed on this thought, and that too by men of the highest character in critical knowledge—Cicero, Quintilian, Valerius, Maximus, and Pliny—and have been since re-echoed by almost every modern that has written on the Arts, that your adopting it can neither be wondered at nor blamed. It appears now to be so much connected with the subject, that the spectator would perhaps be disappointed in not finding united in the picture what he always united in his mind, and considered as indispensably belonging to the subject. But it may be observed, that those who praise this circumstance were not painters. They use it as an illustration only of their own art; it served their purpose, and it was certainly not their business to enter into the objections that lie against it in another Art. I fear we have but very scanty means of exciting those powers over the imagination which make so very considerable and refined a part of poetry. It is a doubt with me, whether we should even make the attempt. The chief, if not the only occasion, which the painter has for this artifice, is, when the subject is improper, to be more fully represented, either for the sake of decency, or to avoid what would be disagreeable to be seen; and this is not to raise or increase the passions, which is the reason that is given for this practice, but, on the contrary, to diminish their effect.
It is true, sketches, or such drawings as painters generally make for their works, give this pleasure of imagination to a high degree. From a slight, undetermined drawing, where the ideas of the composition and character are, as I may say, only just touched upon, the imagination supplies more than the painter himself, probably, could produce; and we accordingly often find that the finished work disappoints the expectation that was raised from the sketch; and this power of the imagination is one of the causes of the great pleasure we have in viewing a collection of drawings by great painters. These general ideas, which are expressed in sketches, correspond very well to the art often used in Poetry. A great part of the beauty of the celebrated description of Eve in Milton's "Paradise Lost" consists in using only general indistinct expressions, every reader making out the detail according to his own particular imagination,—his own idea of beauty, grace, expression, dignity, or loveliness: but a painter, when he represents Eve on a canvas, is obliged to give a determined form, and his own idea of beauty distinctly expressed.
We cannot on this occasion, nor indeed on any other, recommend an undeterminate manner or vague ideas of any kind, in a complete and finished picture. This notion, therefore, of leaving anything to the imagination, opposes a very fixed and indispensable rule in our art—that everything shall be carefully and distinctly expressed, as if the painter knew, with correctness and precision, the exact form and character of whatever is introduced into the picture. This is what with us is called Science and Learning: which must not be sacrificed and given up for an uncertain and doubtful beauty, which, not naturally belonging to our Art, will probably be sought for without success.