Originating in the 17th Century, it was sparked by philosophers Francis Bacon (1562-1626), Baruch Spinoza (1632–1677), John Locke (1632–1704), Pierre Bayle (1647–1706), Voltaire (1694–1778) and physicist Isaac Newton (1643–1727). Ruling princes often endorsed and fostered these figures and even attempted to apply their ideas of government in what was known as enlightened absolutism. The Scientific Revolution is closely tied to the Enlightenment, as its discoveries overturned many traditional concepts and introduced new perspectives on nature and man's place within it. The Enlightenment flourished until about 1790–1800, at which point the Enlightenment, with its emphasis on reason, gave way to Romanticism, which placed a new emphasis on emotion; a Counter-Enlightenment began to increase in prominence. The Romantics argued that the Enlightenment was reductionistic insofar as it had largely ignored the forces of imagination, mystery, and sentiment.
In France, Enlightenment was based in the salons and culminated in the great Encyclopédie (1751–72) edited by Denis Diderot (1713–1784) and (until 1759) Jean le Rond d'Alembert (1717–1783) with contributions by hundreds of leading intellectuals who were called philosophes, notably Voltaire (1694–1778), Rousseau (1712–1778) and Montesquieu (1689–1755). Some 25,000 copies of the 35 volume encyclopedia were sold, half of them outside France. These new intellectual strains would spread to urban centres across Europe, notably England, Scotland, the German states, the Netherlands, Poland, Russia, Italy, Austria, Spain. It was also very succesful in America, where its influence was manifested in the works of Francophiles like Benjamin Franklin and Thomas Jefferson, among others. It played a major role in the American Revolution. The political ideals of the Enlightenment influenced the American Declaration of Independence, the United States Bill of Rights, the French Declaration of the Rights of Man and of the Citizen, and the Polish–Lithuanian Constitution of May 3, 1791.