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...

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...

David Hume was a Scottish philosopher, historian, economist, and essayist known especially for his philosophical empiricism and scepticism. He was one of the most important figures in the Scottish Enlightenment, and in the history of Wester...

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...

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...

Charles Bonnet, Swiss naturalist and philosophical writer. In 1760 he described a condition now called Charles Bonnet Syndrome, in which vivid, complex visual hallucinations (fictive visual percepts) occur in psychologically normal people....

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...

Adam Ferguson was a Scottish philosopher, social scientist and historian of the Scottish Enlightenment. He is sometimes called "the father of modern sociology." Ferguson's Essay on the History of Civil Society (1767) drew on classical autho...

Immanuel Kant was a German philosopher who is widely considered to be a central figure of modern philosophy. He argued that fundamental concepts structure human experience, and that reason is the source of morality. His thought continues to...

Johann Heinrich Lambert (Jean-Henri Lambert in French) was a Swiss polymath who made important contributions to the subjects of mathematics, physics (particularly optics), philosophy, astronomy and map projections. Edward Tufte calls him an...

Edmund Burke PC was an Irish statesman, author, orator, political theorist and philosopher who, after moving to England, served for many years in the House of Commons of Great Britain as a member of the Whig party. He is mainly remembered f...

Joseph Priestley was an 18th-century English theologian, Dissenting clergyman, natural philosopher, educator, and political theorist who published over 150 works. He is usually credited with the discovery of oxygen, having isolated it in it...

Jeremy Bentham was a British philosopher, jurist, and social reformer. He is regarded as the founder of modern utilitarianism. Bentham became a leading theorist in Anglo-American philosophy of law, and a political radical whose ideas inf...

Alexander Hamilton was a Founding Father, soldier, economist, political philosopher, one of America's first constitutional lawyers and the first United States Secretary of the Treasury. As Secretary of the Treasury, Hamilton was the prim...

William Godwin was an English journalist, political philosopher and novelist. He is considered one of the first exponents of utilitarianism, and the first modern proponent of anarchism. Godwin is most famous for two books that he published...