in his possession before it was printed.
"Answered that he had not had the said manuscript in his possession before or after it was printed.
"Interrogated whether he has not composed a work which appeared some years ago, entitled Philosophic Thoughts.
"Answered no."
And so, after a dozen more replies of equal veracity, on reading being made to the respondent of the present interrogatory, Diderot "said that the answers contain the truth, persisted in them, and signed," as witness his hand. A sorrowful picture, indeed, of the plight of an apostle of a new doctrine. On the other hand, the apostle of the new doctrine was perhaps good enough for the preachers of the old. Two years before this, the priest of the church of Saint Médard had thought it worth while to turn spy and informer. This is the report which the base creature sent to the lieutenant of police (1747):—
"Diderot, a man of no profession, living, etc., is a young man who plays the free-thinker, and glories in impiety. He is the author of several works of philosophy, in which he attacks religion. His talk is like his books. He is busy at the composition of one now, which is very dangerous."
The priest's delation was confirmed presently by a still lower agent of authority, who, in bad grammar and bad spelling, describes "this wretch Diderot as a very dangerous man, who speaks of the holy mysteries of our religion with contempt; who corrupts manners, and who says that when he comes to the last moment of his life, he will have to do like others, will confess, and will receive what we call our God, but it will only be for the sake of his family."[83]
All these things had prepared an unfriendly fate for Diderot when his time at last came, as it came to most of his friends. For a month he was cut off from the outer world. His only company was the Paradise Lost, which he happened to have in his pocket at the moment of his arrest. He compounded an ink for himself, by scraping the slate at the side of his window, grinding it very fine, and mixing with wine in a broken glass. A toothpick, found by happy accident in the pocket of his waistcoat, served him for pen, and the fly-leaves and margins of the Milton made a repository for his thoughts. With a simple but very characteristic interest in others who might be as unfortunate as himself, he wrote upon the walls of his prison his short recipe for writing materials.[84] Diderot might easily have been buried here for months or even years. But, as it happened, the governor of Vincennes was a kinsman of Voltaire's divine Emily, the Marquise du Châtelet. When Voltaire, who was then at Luneville, heard of Diderot's ill-fortune, he proclaimed as usual his detestation of a land where bigots can shut up philosophers under lock and key, and as usual he at once set to work to lessen the wrong. Madame du Châtelet was made to write to the governor, praying him to soften the imprisonment of Socrates-Diderot as much as he could.[85] It was the last of her good deeds, for she died in circumstances of grotesque tragedy in the following month (Sept. 1749), and her husband, her son, Voltaire, and Saint Lambert alternately consoled and reproached one another over her grave. Diderot meanwhile had the benefit of her intervention. He was transferred from the dungeon to the château, was allowed to wander about the park on his parole, and to receive visits from his friends. One of the most impulsive of these friends was Jean Jacques. Their first meeting after Diderot's imprisonment has been, described by Rousseau himself, in terms at which the phlegmatic will smile—not wisely, for the manner of expressing emotion, like all else, is relative. "After three or four centuries of impatience, I flew into the arms of my friend. indescribable moment! He, was not alone; D'Alembert and the treasurer of the Sainte Chapelle were with him. As I went in, I saw no one but himself. With a single hound and a cry, I pressed his face close to mine, I clasped him tightly in my arms, without speaking to him save by my tears and sobs; I was choking with tenderness and joy."[86] After this Rousseau used to walk over to see him two or three times a week. It was during one of these walks on a hot summer afternoon, that he first thought of that memorable literary effort, the essay against civilisation. He sank down at the foot of a tree, and feverishly wrote a page or two to show to his friend. He tells us that but for Diderot's encouragement he should hardly have executed his design. There is a story that it was Diderot who first suggested to Rousseau to affirm that arts and sciences had corrupted manners. There is no violent improbability in this. Diderot, for all the robustness and penetration of his judgment, was yet often borne by his natural impetuosity towards the region of paradox. His own curious and bold Supplément au Voyage de Bougainville is entirely in the vein of Rousseau's discourse on the superiority of primitive over civilised life. "Prodigious sibyl of the eighteenth century," cries Michelet, "the mighty magician Diderot! He breathed out one day a breath; lo, there sprang up a man—Rousseau."[87] It is hard to believe that such an astonishing genius for literature as Rousseau's could have lain concealed, after he had once inhaled the vivifying air of Paris. Yet the fire and inspiring energy of Diderot may well have been the quickening accident that brought his genius into productive life. All the testimony goes to show that it was so. Whether, however, Diderot is really responsible for the perverse direction of Rousseau's argument is a question of fact, and the evidence is not decisive.[88] It would be an odd example of that giant's nonchalance which is always so amazing in Diderot, if he really instigated the most eloquent and passionate writer then alive to denounce art and science as the scourge of mankind, at the very moment when he was himself straining his whole effort to spread the arts and sciences, and to cover them with glory in men's eyes.
Among Diderot's other visitors was Madame de Puisieux. One day she came clad in gay apparel, bound for a merry-making at a neighbouring village. Diderot, conceiving jealous doubts of her fidelity, received assurance that she would be solitary and companionless at the feast, thinking mournfully of her persecuted philosopher lying in prison. She forgot that one of the parents of philosophy is curiosity, and that Diderot had trained himself in the school of the sceptics. That evening he scaled the walls of the park of Vincennes, flew to the scene of the festival, and there found what he had expected. In vain for her had he written upon virtue and merit, and the unhallowed friendship came to an end.
After three months of captivity, Diderot was released. The booksellers who were interested in the Encyclopædia were importunate with the authorities to restore its head and chief to an enterprise that stirred universal curiosity.[89] For the first volume of that famous work was now almost ready to appear, and expectation was keen. The idea of the book had occurred to Diderot in 1745, and from 1745 to 1765 it was the absorbing occupation of his life. Of the value and significance of the conception underlying this immense operation, I shall speak in the next chapter. There also I shall describe its history. The circumstances under which these five-and-thirty volumes were given to the world mark Diderot for one of the few true heroes of literature. They called into play some of the most admirable of human qualities. They required a laboriousness as steady and as prolonged, a wariness as alert, a grasp of plan as firm, a fortitude as patient, unvarying, and unshaken, as men are accustomed to applaud in the engineer who constructs some vast and difficult work, or the commander who directs a hardy and dangerous expedition.
CHAPTER V.
THE ENCYCLOPÆDIA.
I
The history of the encyclopædic conception of human knowledge is a much more interesting and important object of inquiry than a list of the various encyclopædic enterprises to be found in the annals of literature. Yet it is proper here to mention some of the attempts in this direction, which preceded our memorable book of the eighteenth century. It is to Aristotle, no doubt, that we must look for the first glimpse of the idea that human knowledge is a totality, whose parts are all closely and organically connected with one another. But the idea that only dawned in that gigantic understanding was lost for many centuries. The compilations of Pliny are not in a right sense encyclopædic, being presided over by no definite idea of informing order. It was not until the later middle age that any attempt was made to present knowledge as a whole. Albertus Magnus, "the