Pierre-Louis Moreau de Maupertuis was a French mathematician, philosopher and man of letters. He became the Director of the Académie des Sciences, and the first President of the Berlin Academy of Science, at the invitation of Frederick the...

Bertrand-François Mahé de La Bourdonnais (comte de La Bourdonnais) was a French naval officer and administrator, in the service of the French East India Company. He went to sea when a boy, and in 1718 entered the service of the French East...

François Antoine de Legall de Kermeur was a French chess player. His name is variously written Kermur, Sire de Legalle, by Twiss, and Kermur and Kermuy, Sire de Legal, by others. In the List of Subscribers to Philidor's second edition it st...

Gabrielle Émilie Le Tonnelier de Breteuil, marquise du Châtelet was a French mathematician, physicist, and author during the Age of Enlightenment. Her crowning achievement is considered to be her translation and commentary on Isaac Newton's...

Georges-Louis Leclerc, Comte de Buffon was a French naturalist, mathematician, cosmologist, and encyclopedic author. His works influenced the next two generations of naturalists, including Jean-Baptiste Lamarck and Georges Cuvier. Buffon pu...

Julien Offroy de La Mettrie, French physician, atheist, mechanist and materialist; an infamous specimen of the Enlightenment. La Mettrie's Man a Machine (L'Homme Machine, 1748) is his main and most infamous work. He wrote his Man a Machine...

Louis XV, known as Louis the Beloved (Louis le bien aimé) was a monarch of the House of Bourbon who ruled as King of France and Navarre from 1 September 1715 until his death. He succeeded his great-grandfather Louis XIV at the age of five....

As a brilliant, undisciplined, and unconventional thinker, Jean-Jacques Rousseau spent most of his life being driven by controversy back and forth between Paris and his native Geneva. Rousseau first attracted wide-spread attention with his...

Denis Diderot was a French philosopher, art critic and writer. He was a prominent figure during the Enlightenment and is best known for serving as co-founder, chief editor and contributor to the Encyclopédie along with Jean le Rond d'Alembe...

Claude Adrien Helvétius was a French philosopher and littérateur. In 1758, Helvétius published his philosophical magnum opus, a work called De l'esprit (On Mind). Its atheistic, utilitarian and egalitarian doctrines raised a public outcry a...

Jean François de Saint-Lambert was a French poet and military officer, but he is most remembered for his involvement in two love affairs. Over the winter of 1747-48, Voltaire and his entourage took up residence in Lunéville. Saint-Lambe...

Jean-Baptiste le Rond d'Alembert was a French mathematician, mechanician, physicist, philosopher, and music theorist. Until 1759 he was also co-editor with Denis Diderot of the Encyclopédie. D'Alembert's formula for obtaining solutions to t...

Jeanne-Antoinette Poisson marchioness de Pompadour was the mistress of Louis XV. Educated in art and literature, she married Charles-Guillaume Le Normant d'Étoiles in 1741 and became admired by Parisian society and by the king, who installe...

Paul-Henri Thiry, Baron d'Holbach was a French-German author, philosopher, encyclopedist and a prominent figure in the French Enlightenment. He was born Paul Heinrich Dietrich in Edesheim, near Landau in the Rhenish Palatinate, but lived an...

Claude Balbastre was a French composer, organist, harpsichordist and fortepianist. He was one of the most famous musicians of his time. Balbastre's father, Bénigne, a church organist in Dijon, had 18 children from two marriages; Claude w...