There have been many attempts to imitate this manner since Diderot. No less a person than M. Thiers tried it, when it fell to him as a young writer for the newspapers to describe the Salon of 1822. One brilliant poet, novelist, traveller, critic, has succeeded, and Diderot’s art-criticism is at least equalled in Théophile Gautier’s pages on Titian’s Assunta and Bellini’s Madonna at Venice, or Murillo’s Saint Anthony of Padua at Seville.[43]
Just as in his articles in the Encyclopædia, here too Diderot is always ready to turn from his subject for a moral aside. Even the modern reader will forgive the discursive apostrophe addressed to the judges of the unfortunate Calas, the almost lyric denunciation of an atrocity that struck such deep dismay into the hearts of all the brethren of the Encyclopædia.[44] But Diderot’s asides are usually in less tragic matter. A picture of Michael Van Loo’s reminds him that Van Loo had once a friend in Spain. This friend took it into his head to equip a vessel for a trading expedition, and Van Loo invested all his fortune in his friend’s vessel. The vessel was wrecked, the fortune was lost, and the master was drowned. When Van Loo heard of the disaster, the first word that came to his mouth was—I have lost a good friend. And on this Diderot sails off into a digression on the grounds of praise and blame.
Here are one or two illustrations of the same moralising:
“The effect of our sadness on others is very singular. Have you not sometimes noticed in the country the sudden stillness of the birds, if it happens that on a fine day a cloud comes and lingers over the spot that was resounding with their music? A suit of deep mourning in company is the cloud that, as it passes, causes the momentary silence of the birds. It goes, and the song is resumed.”
“We should divide a nation into three classes: the bulk of the nation, which forms the national taste and manners; those who rise above these are called madmen, originals, oddities; those who fall below are noodles. The progress of the human mind causes the level to shift, and a man often lives too long for his reputation.... He who is too far in front of his generation, who rises above the general level of the common manners, must expect few votes; he ought to be thankful for the oblivion that rescues him from persecution. Those who raise themselves to a great distance above the common level are not perceived; they die forgotten and tranquil, either like everybody else, or far away from everybody else. That is my motto.”[45]
“But Vernet will never be more than Vernet, a mere man. No, and for that very reason all the more astonishing, and his work all the more worthy of admiration. It is, no doubt, a great thing, is this universe; but when I compare it with the energy of the productive cause, if I had to wonder at aught, it would be that its work is not still finer and still more perfect. It is just the reverse when I think of the weakness of man, of his poor means, of the embarrassments and of the short duration of his life, and then of certain things that he has undertaken and carried out.”[46]
These digressions are one source of the charm of Diderot’s criticism. They impart ease and naturalness to it, because they evidently reproduce the free movement of his mind as it really was, and not as the supposed dignity of authorship might require him to pretend. There is no stiffness nor sense, as we have said, of literary strain, and yet there is no disturbing excess of what is random, broken, décousu. The digression flows with lively continuity from the main stream and back again into it, leaving some cheerful impression or curious suggestion behind it. Something, we cannot tell what, draws him off to wonder whether there is not as much verve in the first scene of Terence and in the Antinoüs as in any scene of Molière or any work of Michael Angelo? “I once answered this question, but rather too lightly. Every moment I am apt to make a mistake, because language does not furnish me with the right expression for the truth at the moment. I abandon a thesis for lack of words that shall supply my reasons. I have one thing in the bottom of my heart, and I find myself saying another. There is the advantage of living in retirement and solitude. There a man speaks, asks himself questions, listens to himself, and listens in silence. His secret sensation develops itself little by little.” Then when he is about to speak of one of Greuze’s pictures, he bethinks himself of Greuze’s vanity, and this leads him to a vein of reflection which it is good for all critics, whether public or private, to hold fast in their minds. “If you take away Greuze’s vanity, you will take away his verve, you will extinguish his fire, his genius will undergo an eclipse. Nos qualités tiennent de prés à nos défauts.” And of this important truth, the base of wise tolerance, there follow a dozen graphic examples.[47]
Grétry, the composer, more than once consulted Diderot in moments of perplexity. It was not always safe, he says, to listen to the glowing man when he allowed his imagination to run away with him, but the first burst was of inspiration divine.[48] Painters found his suggestions as potent and as hopeful as the musician found them. He delighted in being able to tell an artist how he might change his bad picture into a good one.[49] “Chardin, La Grenée, Greuze, and others,” says Diderot, “have assured me (and artists are not given to flattering men of letters) that I was about the only one whose images could pass at once to canvas, almost exactly as they came into my head.” And he gives illustrations, how he instantly furnished to La Grenée a subject for a picture of Peace; to Greuze, a design introducing a nude figure without wounding the modesty of the spectator; to a third, a historical subject.[50] The first of the three is a curious example of the difficulty which even a strong genius like Diderot had in freeing himself from artificial traditions. For Peace, he cried to La Grenée, show me Mars with his breastplate, his sword girded on, his head noble and firm. Place standing by his side a Venus, full, divine, voluptuous, smiling on him with an enchanting smile; let her point to his casque, in which her doves have made their nest. Is it not singular that even Diderot sometimes failed to remember that Mars and Venus are dead, that they can never be the source of a fresh and natural inspiration, and that neither artist nor spectator can be moved by cold and vapid allegories in an extinct dialect? If Diderot could have seen such a treatment of La Grenée’s subject as Landseer’s Peace, with its children playing at the mouth of the slumbering gun, he would have been the first to cry out how much nearer this came to the spirit of his own æsthetic methods, than all the pride of Mars and all the beauty of Venus. He is truer to himself in the subject with which he met Greuze’s perplexity in the second of his two illustrations. He bade Greuze paint the Honest Model; a girl sitting to an artist for the first time, her poor garments on the ground beside her; her head resting on one of her hands, and a tear rolling down each cheek. The mother, whose dress betrays the extremity of indigence, is by her side, and with her own hands and one of the hands of her daughter covers her face. The painter, witness of the scene, softened and touched, lets his palette or his brush fall from his hand. Greuze at once exclaimed that he saw his subject; and we may at least admit that this pretty bit of commonplace sentimentalism is more in Diderot’s vein than pagan gods and goddesses.
Diderot is never more truly himself than when he takes the subject of a picture that is before him, and shows how it might have been more effectively handled. Thus:
“The Flight into Egypt is treated in a fresh and piquant manner. But the painter has not known how to make the best of his idea. The Virgin passes in the background of the picture, bearing the infant Jesus in her arms. She is followed by Joseph and the ass carrying the baggage. In the foreground are the shepherds prostrating themselves, their hands upturned towards her, and wishing her a happy journey. Ah, what a fine painting, if the artist had known how to make mountains at the foot of which the Virgin had passed; if he had known how to make the mountains very steep, escarped, majestic; if he had covered them with moss and wild shrubs; if he had given to the Virgin simplicity, beauty, grandeur, nobleness; if the road that she follows had led into the paths of some forest, lonely and remote; if he had taken his moment at the rise of day, or at its fall!”[51]