Divining Nature
Aesthetics of Enchantment in Enlightenment France
Tili Boon Cuillé



The Spectacle of Nature

Le Spectacle de la nature, by the Abbé Pluche, rapidly became an Enlightenment best seller that both revealed and fostered a widespread interest in natural history. A richly illustrated, eight-volume philosophical dialogue serially published in the years 1732–1750, Pluche’s magnum opus was perhaps an unlikely candidate for such immediate and sustained success.1 Predicated on a notion of intelligent design, it contributed to contemporary trends in natural philosophy and theology. Pluche discusses the implications of his title in the preface to his work: “We all enjoy the view of Nature’s exterior. The spectacle is for our benefit. By limiting ourselves to it, we quite adequately discover the beautiful, the useful, and the true.” Content to contemplate the spectacle, Pluche resists the temptation to look behind the scenes.

But claiming to probe Nature’s depths, wanting to attribute effects to their particular causes, wanting to understand the artifice and the workings of the springs . . . is a hardy enterprise of uncertain success. We leave it to those geniuses of a higher order to whom it is granted to enter into these mysteries and see. For our part, we consider it more appropriate to restrict ourselves to the world’s external decor and to the effect of the machines that create the spectacle. . . . We can see that it has only been made so brilliant in order to pique our curiosity. Yet, content with a performance that sufficiently occupies our mind and our senses, we need not demand access to the salle des machines.2

Developing the analogy between the laws of nature and stage machinery—also known as the merveilleux—Pluche elects to remain in the audience, subject to the illusion, rather than venture backstage in order to determine how the special effects are achieved.3 This acknowledgment of the implicit limitations of reason and the senses, subsequently dubbed epistemological modesty, left open the question of whether to attribute these effects to nature or the divine. Evidence of this dichotomy can be seen if we compare this analogy to another famed evocation of nature’s spectacle, that of Bernard de Fontenelle, who likened nature to the opera in his 1686 Entretiens sur la pluralité des mondes habités (Conversations on the Plurality of Worlds). While Fontenelle, a philosopher, invoked the analogy to suggest the sufficiency of the laws of matter, Pluche, a priest, invoked it to demonstrate the existence of God.

The notion of nature as spectacle, like that of nature as clock or book, dates back to the Greek philosophers’ initial forays into natural history. Christian theologians reinforced this imagery over the centuries, for the perfection or complexity of such creations seemed to imply the existence of a creator. Whether clock, book, or spectacle, the concept of nature harbors an inherent tension, for it is implicitly likened to its opposite: artifact, artifice, or art.4 In their analyses of the emerging language of scientific inquiry, Steven Shapin and Robert Markley interpret the “constitutive metaphor” of the two books—Nature and Scripture—in the context of late seventeenth-century physico-theology, which informed the methods of the Royal Society, “justifying natural philosophy as a means to a theological end.”5 Jessica Riskin explores the resonance of the clockwork metaphor, primarily associated with late seventeenth-century mechanism yet employed over the centuries to suggest either nature’s agency (organized) or lack thereof (designed).6 Such figurative language arose, Tita Chico suggests, as natural philosophers considered how to understand and represent the natural world.7

Early-modern characterizations of nature as book, clock, or spectacle were not unrelated. In The Excellency of Theology, Robert Boyle describes nature as a book either without an ending, whose ending is concealed, or whose ending will never be reached; a cliffhanger of sorts.8 Larry Laudan traces the heritage of the clockwork metaphor from René Descartes through Boyle to John Locke, all of whom emphasize the fact that, so long as a watch remains closed or a clock is seen from afar (Locke’s famous clock at Strasbourg), we can but speculate as to the arrangement of its inner workings. Yet, as Laudan notes, Descartes ultimately “fell victim to his own metaphor,”9 for just as one can presumably read to the end of a book, one can also in most cases open a watch or a clock to examine its inner workings, which is how the metaphor came to be understood. The comparison of nature to spectacle, however, preserved the notion of an area in the wings, backstage, or behind the scenes (dans les coulisses) that could not be perceived from the audience. It did so, moreover, in an era when spectators were removed from the stage and relegated to the audience in order to enhance the illusion. The invocation of the analogies of the book and the clock by those who wished to posit the limits of human understanding thus suggests a certain carryover rather than a sharp distinction between what Riskin refers to as the “theological mechanists” of the Royal Society and the “sentimental empiricists” of the French Enlightenment, who subsequently privileged the notion of nature as spectacle. While the phrase “book of nature” remained prevalent in eighteenth-century Britain, the phrase “spectacle of nature” outstripped it in eighteenth-century France dating from the publication of Pluche’s bestseller.10

The characterization of nature as spectacle carries certain connotations that the other expressions do not. First of all, it shifts the emphasis away from the implied creator toward a structure of representation and reception, for while we are familiar with references to the author of nature or the great clockmaker, we rarely if ever hear of the divine dramaturge. Whereas the theatrum mundi posited the gods or God as spectators of humanity, the spectacle of nature casts humanity not as actors but as audience. While both clock and spectacle consist of moving parts—springs, cogs, wheels—spectacle is far more dynamic; though scripted, choreographed, and directed, it is nevertheless subject to the vagaries of performance. In the early-modern context, spectacle was generally understood to refer to the sung rather than the spoken theater, moreover, involving the collaboration of the arts and technology to produce a multisensory experience. It also adds an affective dimension, for spectators both comprehend (intellectually) and react (emotionally) to what they perceive. The construct thus proved equally useful in the realms of epistemology and aesthetics and was particularly suited to the widespread tendency to “[view] life in terms of spectator-spectacle relations” that David Marshall attributes to the period.11 Finally, spectacle effectively subdivides nature into its visible and invisible (or occult) components, the former accessible to the senses, the latter beyond their reach, offering little to no assurance that its “secrets” can be discovered. By the turn of the eighteenth century, natural philosophers and theologians were inclined to agree that first causes were providential, material, or difficult to impossible to determine. In his sweeping study of the period, Jonathan Israel remarks that “apparent ‘design,’ as Diderot was to confirm, could after all be just as convincingly ascribed . . . to Nature’s self-formation or evolution, as to the Providence of Newton.”12 Spectators, regardless of their persuasion, could observe, admire, analyze, and interrogate the design, in other words, without ever venturing to settle the question of whether it was intelligent. Whereas Riskin characterizes Pluche’s Spectacle de la nature as the last gasp of a “brute-mechanist argument-from-design tradition,” I take this work as my point of departure, demonstrating how the sentimental empiricists who wrote in Pluche’s wake deployed this metaphor in the interest not of penetrating nature’s mysteries or exposing its mechanisms but of respecting its integrity while exploring its vitality, adopting the attitude that Pierre Hadot describes as Orphic.13

The notion of spectacle in eighteenth-century France had something of a bad rap. Considered a frivolous means of diversion or entertainment, it was seldom taken seriously. Associated with the rococo aesthetic of distraction rather than the neoclassical aesthetic of absorption, it was, then as now, presumed to occasion passivity, dissipation, or dissention in the audience. Connoting both artificial and superficial, the term spectacle was usually prefaced by or presumed to imply the qualifier mere. This reputation, as we shall see, was hardly deserved. We might ask, however, whether a spectacle is still a spectacle if there is no one to see it. The notion of spectacle implied, in other words, the existence of a spectator. Joseph Addison and Richard Steele’s Spectator—a periodical that ran in the years 1712–1713, inspiring Pierre de Marivaux’s 1721–1724 Le Spectateur français—broadened this role from a member of an audience to a member (and observer) of society. A successful playwright, Marivaux was keenly aware of the role of the spectator, which he explored at great length in the character of Jacob, a peasant freshly arrived in Paris from the provinces, who learned to climb the social ladder by changing costume and forms of address, eventually receiving his comeuppance in the foyer of the Comédie. Like the Baron de Montesquieu’s Rica and Françoise de Graffigny’s Zilia, who respectively hailed from Persia and Peru and viewed Parisians, their language, and their mores with an objective eye, Jacob saw Parisians for what they really were. Jean-Jacques Rousseau likewise arrived in Paris from provincial Geneva only to decry what he found, while Denis Diderot’s eponymous character, Rameau's nephew, exposed the social posturing at the heart of every economic transaction. Sébastien Mercier and Nicolas-Edme Restif de la Bretonne, who observed Paris by day and by night throughout the tumultuous years of the Revolution, round out the list of fictional and factual spectators who broke down the boundaries between stage and street, unmasking the theatricality inherent to eighteenth-century society. Critics who have taken an interest in these developments invariably expand the scope of their inquiry beyond the stage, focusing on the debates that raged among spectators at the Comédie-Française and the Opéra, on the spectator function that emerged in theories of art, law, and politics, or on the spectator as observer and critic of society. I build on these studies yet redirect our gaze toward the spectacle of nature, focusing on figures who view nature from what Marshall calls an “aesthetic perspective.”14

Among the first to adopt an aesthetic perspective was Addison himself, who anticipates several of my lines of inquiry in Spectator nos. 411–21, dedicated to the pleasures of the imagination that arise from visible objects and their artistic representation, whether present or absent, factual or fictitious. These include “histories, fables, and contemplations of nature.”15 While Addison claims that nature is most effective when it resembles art, as is art when it resembles nature, certain fictions depart from nature, employing what he calls, after John Dryden, the “fairy-way of writing,” for fiction takes not only the natural world as its province but also worlds of its own design.16 From here, Addison segues into a discussion of related genres, including history, natural philosophy, and travel narratives. Foremost among these are texts written by the “authors of the new philosophy,” of whom he states: “There is something very engaging to the fancy, as well as to our reason, in the treatises of metals, minerals, plants, and meteors; but when we survey the whole earth at once, and the several planets that lie within its neighborhood, we are filled with a pleasing astonishment, to see so many worlds, . . . and confounded with the immensity and magnificence of Nature.”17 The evocation, discovery, and representation of other worlds is thus common to natural philosophy and fiction. I propose to investigate what transpired when those accustomed to honing their powers of observation on the natural world felt obliged to engage in philosophical speculation or inclined to indulge in the pleasures of the imagination.


The Enlightenment remains widely associated with the rise of scientific progress and the loss of religious faith, a dual tendency that is thought to have contributed to the disenchantment of the world. In his 1917 lecture “Science as a Vocation,” Max Weber nostalgically characterizes the “inward calling for science” as “passionate devotion.” What was once a matter of enthusiasm or inspiration has become a matter of calculation, however, relying on the mind rather than the heart and soul. Though “inspiration plays no less a role in science that it does in the realm of art,” the affinity between the two ends there, for science is linked to progress. Charting the growing division between science and religion, Weber famously declares: “The fate of our times is characterized by . . . the disenchantment of the world,” which has come to define the modern condition.18 Borrowing this phrase in Dialectic of Enlightenment, Max Horkheimer and Theodor Adorno attribute the loss of spirituality to the rise of experimental philosophy, asserting: “The program of the Enlightenment was the disenchantment of the world; the dissolution of myths and the substitution of knowledge for fancy.”19 The Enlightenment and modernity have been indelibly associated with disenchantment ever since.

Recently, scholars have started to contest the persistent pairing of the terms modernity and disenchantment in the history of science, religion, and mass culture. While Bruno Latour characterizes moderns as those who view disenchantment as a necessary evil and antimoderns as those who view it as a catastrophe, he himself insists that this apparent break with the premodern past is illusory (the amodern view).20 Tracing the genealogy of what he boldly dubs the “myth of disenchantment,” Jason Ā. Josephson-Storm argues that it began not with the scientific revolution, as has often been claimed—neither Descartes, nor Francis Bacon, nor Isaac Newton eschewed religion and the occult—but rather with the selective reading, reception, and representation of their work.21 Religion and the occult were not eradicated but merely displaced, he contends, for “if Diderot exiled God, it was in order to enchant nature with powers previously reserved for the divine.”22 Thus, as Darrin McMahon effectively puts it, “the progressive disenchantment of the world was accompanied from the start by its progressive re-enchantment.”23

While a number of scholars have begun to resist disenchantment’s association with modernity, few have returned to the purported origin of the problem, questioning its attribution to the Enlightenment. Recent antirationalist interpretations of the era, including those of Jesse Molesworth, Sarah Tindal Kareem, and Courtney Weiss Smith, have focused primarily on British philosophy and literature. Yet France was better known for its rationalism, materialism, and attacks on superstition, fanaticism, and the abuses of organized religion. Its association with disenchantment is therefore harder to shake. Charly Coleman’s examination of resacralization as a countercurrent to the secularizing process in eighteenth-century France constitutes a significant step in this direction.24 I investigate the fate of the marvelous in the age of reason and sensibility. My study challenges Horkheimer and Adorno’s assertion that the pursuit of knowledge led to the domination of nature and the denunciation of illusion for fear of the unknown, denying the existence of an absolute rift between science, art, and religion. I therefore provisionally retain, in order to reclaim, the embattled term Enlightenment. The notion of disenchantment, I contend, is fundamentally at odds with the aesthetic aims of the period, which prompted audiences to interrogate, test, and cast beyond the limits of reason and the senses. The figures in my study, to the contrary, both sustained the possibility of and helped establish the epistemological and aesthetic preconditions for belief, whether in revealed, discovered, fictional, or experiential truth.

In their introduction to The Re-Enchantment of the World: Secular Magic in a Rational Age, Joshua Landy and Michael Saler delineate three possible approaches to the “problem” of disenchantment. The binary approach suggests that rationalism and secularism relegated enchantment to the margins of popular culture whereas the dialectical approach suggests that rationalism and secularism became a dangerous and deceptive form of enchantment themselves. Yet disenchantment, they contend, need neither displace nor become its opposite. By the same token, enchantment need be neither regressive nor insidious. They therefore promote the antinomial approach, characterizing modernity as harboring “fruitful tensions between seemingly irreconcilable forces and ideas”: secularism and superstition, science and religion, reality and imagination, reason and enchantment.25 My book contributes to this third approach. I do not, however, insist quite so strongly on secularity as a means of recovering what was “formerly found in contemplation of the divine.”26 As my study suggests, both believers and nonbelievers participated in the observation and representation of nature’s marvels irrespective of their creed, a compatibility facilitated by the conception of nature as spectacle. The “void” they sought to fill, I maintain, was occasioned not by the absence of God so much as that of the gods during a momentary hiatus when the inadequacy of the pagan marvelous was widely acknowledged but a viable substitute had yet to be found.

If we look up “Enchantment” in Diderot and Jean le Rond d’Alembert’s Encyclopédie, we find three definitions. One cites the Abbé Pluche, who identifies the etymological origin of the term as “je chante” (I sing), used to refer to the ritual incantations pronounced to preserve or ensure the medicinal or magical properties of plants. Another extends this definition to any amulet or talisman used for healing purposes, particularly in natural medicine or religion, a practice common to philosophers and physicians. The third, and most famous, to which I will return, associates the term with the opera, or “theater of enchantment,” whose cornerstone was the marvelous (merveilleux).27 If we consult the entry “Marvelous,” however, we open up a veritable Pandora’s box, or can of worms. Defined as the intervention of the gods in the epics of Homer and Virgil, or personified passions in modern poetry, marvelous occurrences are glossed as bold but plausible fictions. Yet the use of the marvelous must be rethought, the anonymous author of the entry avers, for the intervention of the gods, which seemed perfectly plausible to the Greeks and Romans, no longer was to the French. To each time and place its own marvelous, he asserts, making an exception, significantly, for natural phenomena, which he deems universal. The Greeks and the Romans did not borrow their marvelous from elsewhere. It was therefore up to the French to settle on a variety of marvelous to which they could lend credence, which should ideally be informed by their prevailing system of belief.28 The Christian marvelous was not yet considered a viable substitute, however, for its subject was too sacred, its virgins too modest, its devils too burlesque.29 Milton alone had succeeded in this vein and would arguably not be rivaled until the full potential of the Christian marvelous was acknowledged toward the end of the century.30

Enlightenment France thus became the site not only of a crisis of language, as I have argued previously, but also of what we might consider a crisis of faith—a crisis that was less religious than aesthetic.31 What we find in the treatises, prefaces, and press, in the encyclopedias, dictionaries, and supplements from the era, is on the one hand a denunciation of the marvelous and on the other a quest to identify fresh sources of inspiration to improve its efficacy or approximate its effects. In the Supplément to the Encyclopédie, Jean-François Marmontel recounts how the encounter with the marvelous in nature led to the conception of the marvelous in the arts.

Philosophy is the mother of the marvelous and the contemplation of nature gave her the idea. She saw around her a multitude of marvels without any cause other than movement, which itself had a cause. She therefore said, “There must be a principle of strength and intelligence above and beyond what I can see.” This was the primitive, generative idea of the marvelous. This unique and universal cause that adhered to a simple law was too vast and imperceptible for the sages or the people. They divided it into a multitude of . . . agents modeled after us, which gave us the gods, the demons, the genies. . . . Nothing could have been more favorable to the arts.32

Artists, Marmontel suggests, concoct agents responsible for phenomena that lie beyond the realm of human understanding that natural philosophers are unable to explain. The conception of the marvelous (or the supernatural) in eighteenth-century France was intimately linked to the understanding of nature (or the natural), with which I propose to begin. In the following chapters, we will encounter philosophers and artists who turn to the natural world and to alternative mythologies—notably found in the Middle East, the French tropics, and the Gallic past that espoused various forms of natural theology—in an effort to render the marvelous plausible. This did not mean that Greco-Roman mythology was indelibly replaced or displaced. Instead, it was harnessed, on occasion, for the purposes of exploring the new empirical, sensationalist, and vitalist philosophies, as we see in the deployment of the Pygmalion myth, or infused with a new spirit of conviction, as we see in the emergence of neoclassical history painting, the resurgence of epic poetry, and the reform of tragic opera in the course of the century. It thus both contributed to and benefited from the search for new sources of inspiration. The crisis of faith did not lead, therefore, to the systematic elimination of the marvelous in order to bring artistic productions into line with Enlightenment rationalism. Instead, it inspired experimental forays into alternate subjects, modes, forms, and spaces of representation, often predicated on the natural world yet infused with a sense of the marvelous that audiences found more plausible, probable, or possible and therefore persuasive. Faced with potential disenchantment, disillusionment, or demystification, philosophers and artists actively staved it off, seeking instead to induce and sustain a range of emotions traditionally associated with religion, including wonder, enthusiasm, melancholy, and the “sentiment of divinity.”


All translations from the original French are mine unless otherwise indicated.

1. For the impact of the Abbé Pluche’s Spectacle de la nature, which went through 59 editions, see Barbara Stafford, Artful Science: Enlightenment Entertainment and the Eclipse of Visual Education (Cambridge, MA: MIT Press, 1994), 159.

2. Noël-Antoine Pluche, Le Spectacle de la nature (Paris: Frères Estienne, 1764–1770), vol. I, viii–x.

3. Lorraine Daston notes that Pluche was “content to describe only ‘the exterior decoration of the world’ without plumbing hidden causes.” “Attention and the Values of Nature in the Enlightenment,” in The Moral Authority of Nature, ed. Lorraine Daston and Fernando Vidal (Chicago: Chicago University Press, 2003), 107.

4. These can be compared to what David W. Bates calls “spatial metaphors of knowledge.” Enlightenment Aberrations: Error and Revolution in France (Ithaca, NY: Cornell University Press, 2002), 31-2.

5. Robert Markley, Fallen Languages: Crises of Representation in Newtonian England, 1660–1740 (Ithaca, NY: Cornell University Press, 1993), 39–45; and Steven Shapin, “Robert Boyle and Mathematics: Reality, Representation and Experimental Practice,” Science in Context 2.1 (1988): 24.

6. Jessica Riskin, The Restless Clock: A History of the Centuries-Long Argument over What Makes Living Things Tick (Chicago: University of Chicago Press, 2016), 2–9. Riskin provides a necessary corrective to our understanding of the clockwork metaphor by recalling the apparent agency of medieval machines that informed the writings of René Descartes and Gottfried Leibniz, inspired Jacques de Vaucanson’s lifelike automata of the 1730s, and corresponded to the perception of nature as organized rather than designed (21–23, 44–50, 103–6, 110–11, 118–22, 178–83).

7. Tita Chico, The Experimental Imagination: Literary Knowledge and Science in the British Enlightenment (Stanford, CA: Stanford University Press, 2018), 9–10.

8. Markley, Fallen Languages, 43.

9. Larry Laudan, Science and Hypothesis: Historical Essays on Scientific Methodology (Berlin: Springer, 1981), 32, 38, 48, 64–67.

10. In the spirit of Enlightenment philosophical experiments that can be repeated at home, the reader can enter “book of nature” and “spectacle of nature” (first in English, then in French) for 1700–1800 into the Google Ngram Viewer with a standard smoothing of 3. The spike coincides with the publication of Pluche’s best seller, then mounts through the end of the century with a series of predictable peaks occurring in 1748, 1754, 1765, and 1773.

11. David Marshall, The Frame of Art: Fictions of Aesthetic Experience, 1750–1815 (Baltimore: Johns Hopkins University Press, 2005), 12–13.

12. Jonathan Israel, Radical Enlightenment: Philosophy and the Making of Modernity 1650–1750 (Oxford: Oxford University Press, 2002), 464.

13. Riskin, Restless Clock, 81; Pierre Hadot, The Veil of Isis: An Essay on the History of the Idea of Nature, trans. Michael Chase (Cambridge, MA: Harvard University Press, 2006), 98.

14. Marshall disavows the narrative that charts the rise of disinterestedness or detachment from the philosophy of Shaftsbury to the walls of the museum. Instead, he asserts that “the effect of an aesthetic perspective is not the separation of the realm of art but rather a blurring of the boundaries between the realm of art and whatever is defined in opposition to art: nature, reality, real life” (Frame of Art, 4).

15. Joseph Addison, Spectator no. 411.

16. Addison, Spectator nos. 414, 419.

17. Addison, Spectator no. 420.

18. Max Weber, “Science as a Vocation,” Daedalus 87.1 (1958): 111–34, 112, 114, 133.

19. Max Horkheimer and Theodor Adorno, Dialectic of Enlightenment, trans. John Cumming (New York: Continuum Publishing, 1995), 3. Julia. Simon acknowledges the accuracy of Horkeimer and Adorno’s characterization of the Enlightenment, but contends that Rousseau and Diderot unsuccessfully attempted to forestall the regression of society. Mass Enlightenment: Critical Studies in Rousseau and Diderot (Albany, NY: State University of New York Press, 1995), 4–5.

20. Bruno Latour, We Have Never Been Modern, trans. Catherine Porter (Cambridge, MA: Harvard University Press, 1993).

21. Jason Ā. Josephson-Storm attributes this selective reading primarily to the Frankfurt School. He asserts unilaterally: “The single most familiar story in the history of science is the tale of disenchantment. . . . I am here to tell you that as broad cultural history, this narrative is wrong.” The Myth of Disenchantment: Magic, Modernity, and the Birth of the Human Sciences (Chicago: Chicago University Press, 2017), 3, 41–4.

22. Josephson-Storm, Myth of Disenchantment, 56–7.

23. Darrin McMahon, Divine Fury: A History of Genius (New York: Basic Books, 2013), 79.

24. Charly Coleman, The Virtues of Abandon: An Anti-Individualist History of the French Enlightenment (Stanford, CA: Stanford University Press, 2014).

25. Joshua Landy and Michael Saler, introduction to The Re-Enchantment of the World: Secular Magic in a Rational Age, ed. Joshua Landy and Michael Saler (Stanford, CA: Stanford University Press, 2009), 1–7.

26. Landy and Saler, introduction to Re-Enchantment, 8.

27. See the entries on “Enchantement” by Mallet, Jaucourt, and Cahusac in Denis Diderot and Jean le Rond D’Alembert, eds., Encyclopédie, ou dictionnaire raisonné des sciences, des arts et des métiers, ARTFL Encyclopédie Project, ed. Robert Morrissey and Glenn Roe (Chicago: University of Chicago, Autumn 2017 edition), http://encyclopedie.uchicago.edu/.

28. See “Merveilleux,” Encyclopédie, 10: 393-5.

29. On this subject, see also Nicolas Boileau’s “Art Poétique,” Diderot’s Salon de 1767, and Voltaire’s Essai sur la poésie épique, respectively.

30. Ariosto and Tasso also integrated the Christian marvelous into their poetry, but both were eclipsed by Milton. On the perpetuation of the marvelous in epic poetry, see Jean-Marie Roulin, L’Épopée de Voltaire à Chateaubriand: poésie, histoire, et politique (Oxford, UK: Voltaire Foundation, 2005).

31. For my discussion of the crisis of language, see the introduction to my book Narrative Interludes: Musical Tableaux in Eighteenth-Century French Texts (Toronto: University of Toronto Press, 2006). See also Sophia Rosenfeld, A Revolution in Language: The Problem of Signs in Late Eighteenth-Century France (Stanford, CA: Stanford University Press, 2001).

32. Jean-François Marmontel, “Vraisemblance” in Supplément de Panckoucke, ARTFL Encyclopédie Project, ed. Robert Morrissey and Glenn Roe (Chicago: University of Chicago, Autumn 2017 edition), http://encyclopedie.uchicago.edu/, 4:1000, 1002.