The complete archives of Louis, Chevalier de Sade
1791-1832 | ca 12.000 leaves, various format
Unpublished political, scientific and historical archives
The complete manuscript unpublished papers of Louis, Chevalier de Sade (1753-1832), author of the Lexicon politique and cousin of the famous Marquis.
The important geopolitical, historical, and scientific archives of a learned aristocrat, a privileged witness of the end of the Ancien Régime, the French Revolution, the Consulate, Empire, and Restoration.
A unique fund of research on the implementation of a constitutional monarchy.
Exceptional collection of the Chevalier Louis de Sade's personal archives, the cousin of the Marquis de Sade, representing 12,000 handwritten pages, including several thousand unpublished and written by his hand. The Chevalier shows a thought system that he describes as «holistic,» including historical, political and scientific reflections.
Louis, Chevalier de SADE
If we take the French Revolution as the birth of an experiment, both secular and political, the Chevalier de Sade was without doubt one of its early critics. Not only of the Revolution, which had many other detractors, but of its political ideology, which would go on profoundly to impact the two hundred years that followed.
What he calls «positive politics» is «based on reasoning and experience». «The theory did have some attractions for me; I studied it with care, I savored its principles. Now, I see their value only in terms of the impact of their implementation, what we've seen them produce in the peoples of which history has given me knowledge. This is my method; I know that it is, all in all, the opposite of the methods utilized by the men who have governed us and written our constitutions to this very day without deviation. This continuous divergence between what has been done and what should never have been done increased my confidence in the path to be followed and at the same time fortified my determination to keep to the views I had adopted, of judging laws by the historic consequences they entail rather than by the lyrical, supposedly conclusive, metaphysical arguments with which these innovators continually, and still to this day, assault us.»
The Chevalier de Sade, who saw the world in terms of his own time and place, could be nothing other than a Royalist. There were practically no examples of democracy in the history known to the Chevalier, apart from the Classical democracies of Greece and Rome which had been experiments only in very elitist forms of democracy. These were very well known to this political scientist, whose papers contain 7,000 pages dedicated to the history of the Classical world.
The republic ushered in by the Revolution, was more than just a political system – it was the realization of a philosophical political ideal. And while most of those opposed to the new regime saw in it above all a threat to their personal situations, their religious beliefs or even more simply their habits, the writings of the Chevalier de Sade show no such dogmatic influence; or at least, he never uses dogma to justify his arguments.
Louis de Sade, a gentleman without a fortune and without significant ties, was conservative through philosophical and historical conviction and not out of interest. It is with this perfect intellectual honesty that he studies the essays, memoirs and political or theoretical works of his contemporaries.
Running counter to Enlightenment thought, the Chevalier's view of society owed very little to philosophy. Though he puts together a serious theoretical history of the development of Man from the condition of «savages» to the forging of various societies, he does not posit Man's ideal nature, as some of his contemporaries did. Rather, the Chevalier examines the gap between nature and the civilized being without passing moral or philosophical judgment, as was the fashion at the time. «The political error that damned Europe in the 18th century was basing its reasoning and legislative principles on Natural Law and forgetting that the social order of Empires is based on territorial possessions.»
The Chevalier applies this sense of restraint to all his arguments, including the Industrial Age – which is to say his own – which, according to him, «has done much good and much harm, and brought us many benefits and many misfortunes.»
This effort at objectivity serves to make up a conservative thesis, but unlike many ideologues of all stripes, the Chevalier does not build up a didactic argument, all of whose elements seek to prove the author's viewpoint. Louis de Sade, who was not intending to publish these writings and therefore has no readership to convince, does not force his arguments to fit the mold of his thinking, but aims to be exhaustive. Thus, he explores all the various avenues, those that both conform to, and do not conform to, his way of seeing the world.
In this respect, that writings of the Chevalier are a peerless collection of the breadth of thinking of an enlightened aristocrat at the heart of the most significant political and social rupture in our history.
Unlike his cousin, the famous Marquis de Sade, the Chevalier was clearly a man of the Ancien Régime. But he was far from being one of its caricature figures who symbolized its decline or its suicidal stagnation; he was the representative of a hereditary monarchy, a political system proved both by timeand in many different places.
Without wealth or power, the Chevalier was not – by standing up for the Monarchy – standing up for his own privileges. Rather, he was describing a social structure that was under threat not from the Revolution (which was merely a consequence), but by the failings of its elites and their misunderstanding of the foundations of Kingship. One is struck by how little he refers to Faith or the Divine Right of Kings.
The Chevalier was an objective thinker rooted in his time, in the same way as the Encyclopedists, but at the service of a world that was soon to disappear, rather than the world just being born.
Like Chateaubriand, than whom he was 15 years older, the Chevalier presents us with a discourse that is deliberately kept posthumous, and thus detached from the constraints of his social and political position. But, unlike the famous memoirs of the former, the papers of Louis de Sade are not those of a famous writer and a French Peer, marked by a political career and a literary authoritativeness that influenced his writing. The posthumous publication of Memoirs from Beyond the Grave
was a premeditated political and literary act which shows a desire to make a mark on the new world just taking shape. The posthumous publication of Chateaubriand's masterpiece was carefully foreseen and organized by its author.
The writings of Louis de Sade are of a different sort. It was his need for exhaustiveness that forced the Chevalier to accept that he would – inevitably – be unable to finish his undertaking. At 75, gathering together his papers, he expressed the wish that his work be continued by others and not published as it stood.
This lack of ego about a work that seems to have taken up an entire lifetime, confirmed by the paucity of other publications during the course of his life – which did not present a major problem for him – was the basis of the Chevalier's thinking and contributes to the unique nature of these writings in a period when publication, the request of permission to publish, the regulation of public morals and the risk of aggressive legal action generally led to the necessity of people censuring themselves as well as taking into account the needs of the reader.
his free-thinker was little given to these wise restrictions. His first work, written on the eve of the Revolution in the hold of the admiralty ship in which he had been placed under arrest by warrant for rebellion, was immediately censured and ground underfoot by the Monarchist government.
It was called: «Mes loisirs sur le vaisseau amiral ou Lettres aux Etats Généraux sur une nouvelle constitution du gouvernement de la France [My free time on the admiralty's ship, or Letters to the Estates General on a new constitution for the government of France].» The other works he had published later were all very much politically engaged and even his scientific study of tides, La Tydologie
, included a number of comparisons to the great social and political movements of the Revolution.
A rebellious spirit, then, despite his attachment to Monarchic principles, the Chevalier was at the same time an iconic figure of the pre-Revolutionary French aristocracy and a representative of one of the least well-known and yet most significant classes of the Ancien Régime, the younger brothers of Lords, Gentlemen without fief, «noble by birth, but third class citizens by the condition of their fortunes,» as he put it when describing himself.
The Chevalier is also notable for his less than orthodox education and career for an intellectual and writer of the age. Born into the more humble branch of the Sade family, the Eyguières (unlike the Marquis, who was descended from the noble branch of the Saumanes), Louis de Sade was at a very young age, after a period with the Jesuits, sent to the hard boarding establishment of the Abbé Choquart, where he knew Mirabeau, of whom his memories are hardly outstanding: «If in my youth, instead of being submerged in the worst of boarding establishments, though not cheap, I had had good teachers, I would have gotten somewhere...With an upbringing straight out of Jean-Jacques Rousseau, raised to the purity of morals by the abbé Choquart, I knew nothing but how to fight, play Barre, climb roofs, steal apples, and a few bits of algebra.» The reference to his contemporary Jean-Jacques Rousseau is without doubt – for this ardent Royalist – the harshest of criticisms aimed at this institution for the correction of ill-disciplined boys. From the age of 15, the Chevalier was enrolled in the Navy and it was therefore as a pure autodidact that he acquired most of his considerable knowledge. Thus, he had no knowledge of Greek or Latin unlike many of his educated contemporaries, but he did have a huge well of knowledge in all the fields of physical and human sciences. It is not only his documents, but also the tasks that were entrusted to him, that bear witness to this fact. He was made a squadron commander, asked to install Benjamin Franklin's new invention, the lightning rod, on all the private houses in the port of Brest, and entrusted with numerous missions of intercession during the first phase of the Revolution, as well as being commissioned to write for several short-lived counter-Revolutionary publications.
The Chevalier de Sade was intellectually very active and was engaged in his interactions with important political actors. It seemed that this autodidact enjoyed real esteem in scientific circles, as witnessed by the translation into English and publication of his study on the extinct volcanoes of Coblenz in the Journal of Natural Philosophy, Chemistry and the Arts
in February 1804. That study had been undertaken in 1792 and sent by the noted mineralogist and crystallographer Jacques Louis de Bournon to his British colleague, the famous chemist William Nicholson, editor of the journal.
But it was only with the publication of Tydologie
that the full depth of the knowledge the Chevalier had acquired during his years in the navy and his subsequent exile came to light, as well as the specific and overarching character
of his thinking.
This work, published in 1810, represents perfectly the development of the Chevalier's thinking and underlines the impressive variety of the papers he has bequeathed to us.
The Chevalier seems, essentially, to perceive the physical world and the sociological and intellectual worlds as one coherent mass, in which each element and event can be understood according to a shared scientific rationale. Heavily influenced by the work of Francis Bacon, the Chevalier sought to write his own Novum organum scientiarum
, towards which the ydologie
was a first attempt. The ambition of this overarching analysis of the sciences did not escape his contemporaries, as witnessed this report by A. L. Millin in the Annales encyclopédiques
of 1818 :
is the core around which the author brings together the various methods that until now have been used to advance the cause of human knowledge. In it, he examines the advantages and inconveniences of each in the various branches of our knowledge where we have employed them. This work therefore is applicable to all who are interested in the sciences, even political science and the science of law. Botanists, astronomers, anatomists and geometrists will find in it a great many problems and new solutions, which will be useful for them in order to advance the bounds of their favorite science...The author points out methods which, in the hands of a man of genius, will permit him – so he says – to trace effects back to the laws of the fundamental causes which bring them about....Thus, one can say that geologists, anatomists, geometrists, horologists, chemists, grammarians, botanists, philosophers and statesmen will not find this work to be without interest and perhaps even not without humor. The author rarely chooses well-trodden paths, and it is rare indeed that anyone who does should be right. It is for learned men to judge if the ideas of the author are innovations, or obstacles that will damage the progress of science.»
, as the Chevalier himself realized, was merely an outline of the system that he wanted to erect, some of whose details still remained to be worked out. The following years were therefore devoted to the study of history, sciences, and politics, with an exhaustiveness witnessed by these archives.
For Louis de Sade broke with Bacon's scientific method and established a link not only between the sciences but also between the sciences and politics. Convinced that one single principle underlies the world in all its aspects, he was looking – in his work, which shows a high level of learning – for a historical and metaphorical logic. he archive of funds that he put together is not therefore an aristocratic intellectual hobby but an attempt to glimpse the underlying common logic that dictates both the sciences and history.
An in-depth study of his historical works would allow someone to uncover the choices made by the Chevalier de Sade as a historian as well as those in his scientific writings.
But if the philosophy of sciences, which appears to be separate from his unfinished works, still remains to be studied, the historical and scientific archives that the Chevalier produced as a whole present another significant field of interest for those wishing to explore the thinking of Louis de Sade, and – what's more – understand how an 18th Century aristocrat responded to the major shakeups of the French Revolution.
Essentially, the Chevalier, who could not boast a depth of ideological knowledge inherited and transmitted naturally through an aristocratic education, was forced to acquire the level of learning that matched his rank all by himself. herefore his archives are not only a record of his reading – which is the basis of his thought – but also of his own understanding and interpretation of what he read. Thus we find out a great deal about the reference works on which he relies for his historical knowledge through his associations and what he deduces from them and retains of them. His choice of reading as well as his dead-ends give the reader an almost exhaustive, and at any rate incredible panorama of the intellectual arcana of this symbolic representative of a society doomed to disappearance.
All the Chevalier's intense political thinking is thus uncovered by the light shed on his bibliographical sources as well as his personal experiences, described at length in his autobiography, which is written in the third person and remained unpublished. At the twilight of his life, he retraces his wanderings, typical of a committed aristocrat, from the early days of the Revolution till the second Restoration. We learn about his pre-Revolutionary military career, his first political writings that earned him a warrant for his arrest and detention in the hold of a ship. He also describes the wavering of military authority following the first shocks of the Revolution, his entry into the counter-Revolutionary resistance, at first official, and later his clandestine efforts to turn the situation around. Finally, we follow him into exile in England and see his slow acceptance of the ineluctable transformation of his society, without his ever losing his fighting spirit (unlike many aristocrats who, at the moment of its greatest crisis, abandoned much more easily the old society to which he, the Chevalier, did not see – right to the very final line of his writings – any viable alternative).
It is without doubt the impressive consistency of his thinking, right from his first published texts to the considerable manuscript work that is his Lexicon, which remained partially unpublished, that allows us to consider the Chevalier's writings as a unique intellectual construction without parallel in the extant personal archives from this key period in the history of France and the Western world.
More than a simple account of the individual life of an aristocrat caught in the upheaval of revolution, these 12,000 pages are the work of a real thinker of the Monarchic regime, and a record of the philosophical and scientific ideas so intimately tied to that particular world view.
The Chevalier Louis Philippe Henri élisabeth [or Isabeau] de Sade, born on 8 May 1753 in Antibes and died in Paris on 26 December 1832, member of the Ordre de Malte, was the cousin of the famous Marquis Donatien Alphonse François de Sade and was around ten years younger than him. Both prolific writers, they communicated, as much in their writing as in their acts, a frank contempt for authority, which caused the divine Marquis to be imprisoned for many years and the Chevalier to be shackled to a Royal Navy ship. Louis de Sade pursued a career as a ship captain until the French Revolution, then he joined the reserve of the English Naval Artillery. Through the political troubles that affected France at the turn of the 19th century, the Chevalier remained a loyal royalist and ardent defender of Louis XVI; he displayed his talents as a polemicist from the first revolutionary uprisings, and even lamented the Restoration of royalty by Louis XVIII in unpublished writings contained in the archives.
Belonging to the eminent, although penniless, Eyguières branch of the de Sade family, the Chevalier Louis de Sade received the title of Chevalier from the Ordre de Malte from birth. He bears one of the oldest names in Provencal nobility and was the godson of the son of Spain, Dom Felip, and Marie Louise Élisabeth de France, daughter of Spain and eldest daughter of the king of France Louis XV. Despite his prestigious title, the lack of means within the Provencal branch of the Sades prevented him, unlike his illustrious cousin, from following a gentleman's education; he therefore received basic training at Aix en Provence, then in a Parisian boarding school where he was the comrade of Mirabeau and the future viceroy of Corsica, Lord Minto, before joining the French Royal Navy at the age of 15. Throughout his life he will compensate for his lack of classical culture with an overflowing thirst for knowledge, which is reflected in particular in the thousands of pages in his archives dedicated to ancient history.
After four years of squadrons in Toulon, the Chevalier de Sade was given the post of Lieutenant on 4 March 1780 by the hand of King Louis XVI, who entrusted him with the command of the ship L'Eclair
, a two-mast ship armed with 22 canons, with which he campaigned on the coasts of Italy and Provence. On the eve of the Revolution, his differences with the hierarchy of the navy deteriorated greatly. In order to distance him from France, he was appointed to the frigate iercelet,
of which he abandoned command. His career as a political writer began during his imprisonment on the Toulon flagship, following his insubordination, where he published Mes loisirs sur le vaisseau amiral ou Lettres aux Etats Généraux sur une nouvelle constitution du gouvernement de la France
. Uncompromising concerning the constitutional monarchy that he considers as an impeachment of royalty, he is struck off the navy lists after having refused to stick to the civic oath imposed by the Constituent Assembly. Co-signing an oath to royalty and to the Catholic church with other naval officers in September 1791 in Nice, he left France the following year and emigrated to England where he returned to service within the navy of King George III. Before his departure for Great Britain, the Chevalier signed a pamphlet «à mes compatriotes» «To my compatriots» in the Paris Gazette
, urging members of the Provence nobility to rally the army of the Comte d'Artois in order to overturn the revolutionary forces. As Artillery Captain of the British navy, in 1794 he participated in the negotiations of the ephemeral Anglo-Corsican kingdom. His friend, the viceroy Sir Gilbert Elliot, Lord Minto, to whom he dedicated his ydologie ou science des marées
, sent him to Malta in order to obtain additional troops from the Grand Master of the Order, the Chevalier de Rohan.
It is at the turn of the 19th century, taking refuge in Lisbon, then in London for ten years or so, that the Chevalier embraced his vocation as a writer and published his first significant works. His emigration to England and his numerous stays at sea gave him the opportunity to meditate on French politics and perfect his scientific knowledge. He re-joined the French navy in 1815 before resigning a year later, disappointed with the monarchy of Louis XVIII. Entirely devoted to his writing activities, the spent the last fifteen years of his life between his residence at Château_Thierry and the Hôtel d'Espagne, rue de Colombier in Paris. He continued, without success, his attempts to publish his Lexicon
, but succeeded nevertheless to publish several works despite his weak low naval officer pension: in 1820 he published L'Art de faire les lois
, and in 1822, Préceptes politiques à l'usage de la monarchie
, and finally in 1831, De la démocratie à l'occasion des élections populaires,
his last published work. The autobiographical elements disseminated in his personal archives reveal the portrait of a solitary man, who dedicated his life to making his political convictions heard. He died in Paris on 26 December 1832 at the age of 79, leaving behind an unpublished work of several thousand pages.
Heir to the Lumières, ship captain and fervent royalist, Louis de Sade was a writer and self-taught scientist born of one of the oldest families of the Provencal nobility. Worthy successor of Pierre-Simon La Place, whose work he continues on the influence of the stars on the tides, the Chevalier also has an ambition commensurate with Alembert with his Lexicon, a major project for an Encyclopaedia of «technical political science words,» which is above all a pretext to the sociological, philosophical and politically engaged reflections on all the notions and values of his time. For example, this is the case with its long definition of «word and thing,» both a linguistic analysis of the dichotomy between language and its designation and a violent pamphlet against the consequences of the misuse of language. This titanic work remained unfinished and was partially published posthumously. A large majority of his writings was not published, leaving thousands of pages of his personal archives to be studied.
The Chevalier left a bank of astonishing eclecticism for posterity, the careful inventory of which has allowed for the discovery of tens of manuscripts of unseen and ready to be published works. From England where he had taken refuge from 1792 until 1815, then in Paris, the Chevalier worked to identify the causes of the revolutionary political divide as well as point out those culpable of such disgrace.
Amongst the thousands of unpublished pages, there are some manuscripts of the highest importance, illustrating his work as a theorist of the French Revolution, in particular
a 240-page history on the Vendée royalist revolt offering a passionate and authentic analysis from the view point of an emigrant aristocrat.
He also signs a diatribe on Louis XVI's minister intitled Histoire du mois de juillet 1789 ou L'Hégire de M. Necker,
relating the misdeeds of Louis XVI's minister, responsible, according to him, for the taking of the Bastille. His archives also contain the unpublished manuscript, Parallèle entre les révolutions anglaise de 1688 et française de 1788,
which is an audacious exercise of historical comparison, the fruit of his admiration for Great Britain.
The Chevalier shamelessly judges the historic errors of King James II by relating them to those of Louis XVI: «James II abusing his power to acquire the power of a King of France and Louis XVI violating the fundamental laws of his kingdom to lower his power to the level of that of a King of England, this was a major error on behalf of them both.» However, he draws this surprising conclusion: «Louis XVI would have been an excellent King of England.»
The majority of his writing focuses on the French Revolution, which precipitates his future as a writer and political thinker. The Chevalier de Sade's archives are made up of scientific, political and historical writings, as well as a section of family correspondence and autobiographical writings of extraordinary rarity, constituting a unique and very precious source of information, which sheds light on the other works.
The Chevalier employed the services of a copyist, whose hand is found distinctly in certain leaves.
The archives contain 2500 pages of political writings, including 11 unpublished manuscripts intended to be included in the Lexicon
, offering a critical view of French society at the time of the Revolution (4 âges de l'ordre social, L'Hégire de M. Necker, L'Art de faire exécuter les lois, l'Innovatiomanie, La Guerre de Vendée, Le Mot & la chose, Les 3 âges des colonies, Les Bonnes Gens, Mon rêve, Le Paraguay
). Louis de Sade remained deeply affected by the collapse of the French royalty, even holding on to the Restoration of the monarchy under Louis XVIII. He instils these opinions in the Lexicon,
a dictionary modelled on the Encyclopaedia,
which he worked on throughout his life: «People keep asking me if this work is finished. My response is always the same: No it is not, it can never be.
POLITICS is a science like astronomy, chemistry, botany, finally like all branches of human knowledge, destined to expand and improve.» In addition to more than 90 unpublished definitions from the Lexicon
, the archives conserve 1511 pages of manuscript that were likely excluded from the version published posthumously because of their excessive volume.
is the most important unpublished manuscript, offering a detailed account and a personal analysis of the bloody revolt of the Chouans, «the most just and legal resistance that there has been amongst men,» which he followed with hope from England. The Chevalier paints a picture of the grandeur and the decadence of the Vendée, filled with ancient and historical references, making this last royalist burst a true Homeric epic, where «we saw new Camille, Penthesilea face up to all the dangers, bearing the dread and death in the ranks of the Republican army.»
The most beautiful passages are dedicated to the Chevalier de la Charrette, martyr of the Vendeans, a «Céladon poitevin» who was «a statesman, similar to Auguste, when he became the owner of the Roman empire.» Retracing the Catholic and royal army's feats of arms, he laments the chaos of its political and military organisation, while glorifying the essential role that it held against the revolutionaries. Despite his desire for objectivity, we must read this admirable account in the light of the intimate convictions of the Chevalier, who remained a man of the Ancien Régime until his death: «I should, as an impartial historian, compare [the cruelties committed by the Vendeans] with those that, on this occasion, were practised by the revolutionaries... The Vendean royalists lost a lot in these debates and not one was enriched by them; the patriots gained a lot and many were enriched...»
He draws conclusions from the disagreements that the Vendean uprisings experienced by placing the blame on the leadership of the revolt: «The misfortune of the Vendée and of France on the other hand, hoped that none of the leaders of this holy resurrection, despite their goodwill and their brilliant qualities, knew how to show its spirit at the height of the political situation where the circumstances had taken it.»
We also find amongst the unpublished manuscripts of the Lexicon
an interesting 208-page diatribe against Necker, a minister supported by the revolutionaries and considered solely responsible by the Chevalier for the Revolution through the disruption of government institutions that he started in 1788. L'Hégire de M. Necker
recounts the story of the fateful month of July 1789, marked by disgrace, then the return of Necker as Prime Minister of finances on 16 July, recalled by the king in order to appease the revolutionaries that had taken the Bastille two days earlier. The Chevalier describes him as a false prophet who abused the trust of Louis XVI and audaciously compares him to Mahomet: «both saw themselves at the head of a sect of many zealous partisans... both used them to regenerate the respective government which protected them and worked to destroy the doctrines, existing institutions and to declare themselves supreme ruler... both were chased by the police of the states where the they caused trouble... Their hegira, their flight from the main stage of their exploits gave the signal to begin the uprisings, quarrels, murders... in a month both were revolutionairies.»
However, we note a real respect for the prophet of Islam who opposes the disgrace placed upon the minister: «The former created a major empire and legitimised the just admiration that posterity had for him, while the latter overthrew a great empire and legitimised the just indignation that history overly justified.»
Day after day, L
details the events, which, since Necker's departure on 12 July, have sealed the history of France and signed the death of the monarchy: «France, undecided on which principle to devote itself, or what kind of government it must now submit to, waited, in the perplexity of its heart and the anxieties of uncertainty, for the one that would bring it the following three powers: the king, the National Assembly or the Paris Commune? It was for whom out of the three to have the throne of St Louis.»
He reviews the Parisian rebellions and the damaging role of Necker who gathered all of the Revolution partisans in his lap: «The National Assembly, the Commune of Paris, the stupid, the fearful and all of the bad subjects of France had only one voice and one action to speed up Necker's return.» The knight deconstructs in passing the myth of the taking of the Bastille: «We expected for hundreds of prisoners to come out. There were only 7 of them and not one of them had been locked up for a state crime: 4 for bills of exchange and 3 others because of disorder that would have condemned them to libellous punishments, if justice had been restored to to them...» This long diatribe is also studded with cutting remarks and good words; the Chevalier joyfully tackles «this lottery that we call révolution, the worst of all those invented to date» and one of the most famous symbols, the guillotine «this universal panacea, which, in an instant, cuts all its ills in one go and without fear of relapse.»
The second part of the Chevalier's archive is a collection of 2000 pages of 17 notes and first drafts of scientific works on an incredible variety of subjects, such as algebra, geology, electricity, architecture, sound, anatomy, game studies and finance. These sciences are used in particular for navigation or for historical science. The archives indeed retain the elements of an unpublished future work of 270 pages, entitled Notes et extraits sur la chronologie ancienne, comparing the different calculation and time serialisation methods. The Chevalier refers in particular to the Mexican, Egyptian, Chinese and biblical calendars, calling in turn on chronography, astronomy and cosmogony. Our ignorance on these scientific subjects has prevented us from studying this fascinating collection more precisely.
The most significant part of the Chevalier's papers is dedicated to history, representing 7500 pages, shared between original reflections and sources that fuel his political science research. In particular the collection contains an impressive unpublished manuscript, Le Parallèle entre les révolutions anglaise de 1688 et française de 1788. This manuscript is based on an impressive amount of knowledge and reflections of hundreds of pages on the history of England, spanning from the conquest of Emperor Claudius of Britain in the year 43 AD until 1701. Greece and Ancient Rome are amongst the civilisations most studied by the Chevalier, taking up several thousands of pages and to which he regularly alludes in his political writings. During his many trips across the Mediterranean between 1791 and 1794, he decided to document his reflections on ancient political history in the form of letters that remain unpublished, based on the writings of numerous Roman historians. He completes his classical culture by reading the ancient poets, of which he has hundreds of copied pages from the Iliad and the Odyssey, odes by Pindar, as well as the Aeneid by Virgil.
Mémoires sur l'administration des Fonderies, in Paris at Gattey Libraire, under the Arcades of the Palais Royal, 1 June 1787 Mes loisirs sur le vaisseau amiral ou Lettres aux Etats Généraux sur une nouvelle constitution du gouvernement de la France, in Toulon by l'Imprimerie du Vaisseau amiral, Paris, T. Barrois, 1789 Lettre à Mr. de Fleurieu ministre et secrétaire d'Etat ayant le Département de la Marine sur le serment civique exigé par tous les fonctionaires publics de l'État by Mr. le Chevalier de Sade,  Détails historiques sur l'arrestation d'Albert de Rioms, commandant d'artillerie in Toulon, 1791 «À mes compatriotes », Gazette de Paris, 9 December 1791 De la Tydologie, ou de la Science des marées... par le chevalier de Sade, London, B. Dulau, 1810-1813 Dialogues politiques sur les principales observations du gouvernement français depuis la restauration et sur leurs conséquences nécessaires par l'auteur de la Tydologie, London, Deboffe, 1815 L'Art de faire des lois, Paris, at Pinard, 1820 Les Préceptes politiques ou les moyens de s'avancer dans une monarchie, Paris, Treuttel & Wurtz, 1822 Des orateurs et des écrivains politiques dans un gouvernement représentatif, Paris, Lamy, Opigez & Mongie, 1823 Causes de la grandeur et de la décadence de l'autorité des Européens en Amérique par M. le chevalier de Sade [prospectus], Paris, Imp. De Tastu, [1827 ?] De la démocratie à l'occasion des élections populaires, Paris, G-A Dentu, 1831 Extracts from Lexicon politque published during the lifetime of the Chevalier de Sade  Corps représentatifs à Bourges. Mauvais ministres. - «Impr. de Everat»  Présages. Centuries de Nostradamus. Fables de La Fontaine. Des 88. - «Impr. de A. Barbier»  Attroupemens. Réveillon. - «Impr. de A. Barbier»  Corps politiques. Monumens. - «Impr. de A. Barbier»  Royalistes. Ultras. Parti des ultras. Apathie des royalistes. Des ventrus, ou des royalistes à la mode en 1824. - «Impr. de A. Barbier»  Origine des constitutions politiques. - «Impr. de A. Barbier» Posthumous work Lexicon politique ou Définition des mots techniques de la science de la politique, Paris, A. Pougin, 1837-1838