The Enlightenment was an 18th century intellectual movement that promoted reason and science over tradition. Enlightenment thinkers like Voltaire and Locke sought progress through reason and natural law. They influenced fields like economics, crime and punishment, and advocated for religious tolerance and women's rights. Enlightened monarchs attempted to rule based on Enlightenment principles, though with mixed success due to resistance from nobility. This period saw developments in philosophy, politics, science and the arts.