Encyclopédie, ou dictionnaire raisonné des sciences, des arts et des métiers (English: Encyclopedia, or a Systematic Dictionary of the Sciences, Arts, and Crafts), better known as Encyclopédie, was a general encyclopedia published in France between 1751 and 1772, with later supplements, revised editions, and translations. It had many writers, known as the Encyclopédistes. It was edited by Denis Diderot and, until 1759, co-edited by Jean le Rond d'Alembert.
The Encyclopédie is most famous for representing the thought of the Enlightenment. According to Denis Diderot in the article "Encyclopédie", the Encyclopédie'''s aim was "to change the way people think" and for people (bourgeoisie) to be able to inform themselves and to know things. He and the other contributors advocated for the secularization of learning away from the Jesuits. Diderot wanted to incorporate all of the world's knowledge into the Encyclopédie and hoped that the text could disseminate all this information to the public and future generations. Thus, it is an example of democratization of knowledge.
It was also the first encyclopedia to include contributions from many named contributors, and it was the first general encyclopedia to describe the mechanical arts. In the first publication, seventeen folio volumes were accompanied by detailed engravings. Later volumes were published without the engravings, in order to better reach a wide audience within Europe.Robert Audi, Diderot, Denis" entry in The Cambridge Dictionary of Philosophy, (Cambridge University Press, 2015)
Origins
The Encyclopédie was originally conceived as a French translation of Ephraim Chambers's Cyclopaedia (1728). Ephraim Chambers had first published his Cyclopaedia, or an Universal Dictionary of Arts and Sciences in two volumes in London in 1728, following several dictionaries of arts and sciences that had emerged in Europe since the late 17th century.Robert Shackleton "The Encyclopedie" in: Proceedings, American Philosophical Society (vol. 114, No. 5, 1970. p. 39) This work became quite renowned, and four editions were published between 1738 and 1742. An Italian translation appeared between 1747 and 1754. In France a member of the banking family Lambert had started translating Chambers into French, but in 1745 the expatriate Englishman John Mills and German Gottfried Sellius were the first to actually prepare a French edition of Ephraim Chambers's Cyclopaedia for publication, which they entitled Encyclopédie.
Early in 1745 a prospectus for the Encyclopédie was published to attract subscribers to the project. This four page prospectus was illustrated by Jean-Michel Papillon, and accompanied by a plan, stating that the work would be published in five volumes from June 1746 until the end of 1748. The text was translated by Mills and Sellius, and it was corrected by an unnamed person, who appears to have been Denis Diderot.
The prospectus was reviewed quite positively and cited at some length in several journals. The Mémoires pour l'histoire des sciences et des beaux arts journal was lavish in its praise: "here are two of the greatest efforts undertaken in literature in a very long time" (voici deux des plus fortes entreprises de Littérature qu'on ait faites depuis long-temps). The Mercure Journal in June 1745, printed a 25-page article that specifically praised Mills' role as translator; the Journal introduced Mills as an English scholar who had been raised in France and who spoke both French and English as a native. The Journal reported that Mills had discussed the work with several academics, was zealous about the project, had devoted his fortune to support this enterprise, and was the sole owner of the publishing privilege.