Chevalier Louis de Jaucourt (French: [də ʒokuʁ]; 16 September 1704 – 3 February 1779) was a French scholar and the most prolific contributor to the Encyclopédie. He wrote about 18,000 articles on subjects including physiology, chemistry, botany, pathology, and political history, or about 25% of the entire encyclopaedia, all done voluntarily. In the generations after the Encyclopédie's, mainly due to his aristocratic background, his legacy was largely overshadowed by the more bohemian Denis Diderot, Jean-Jacques Rousseau and others, but by the mid-20th century more scholarly attention was being paid to him. Source: Wikipedia (en)