The Age of Enlightenment, also known as the Age of Reason or simply the Enlightenment, was a period of intellectual and cultural flourishing in Europe and Western civilization, emerging in the late 17th century in Western Europe.: "the Enlightenment was a Western phenomenon.": "The Enlightenment was a period of European intellectual and cultural development that began in the late seventeenth century and lasted through the eighteenth century."; : "On the heels of the 17th century's Scientific Revolution, the Enlightenment marked an intellectual and cultural shift in the 18th century.": "The Enlightenment was a Western European phenomenon, and after 1750 it reached into Central and Eastern Europe as well, even if it left the Ottoman world and much of southern Europe unaffected." It reached its peak in the 18th century as its ideas spread more widely across Europe and into the European colonies in the Americas and Oceania.: "The Enlightenment was a shared international movement throughout Europe and the Americas.": "The Enlightenment was a broad international movement." Characterized by an emphasis on reason, empirical evidence, and the scientific method, the Enlightenment promoted ideals of individual liberty, religious tolerance, progress, and natural rights. Its thinkers advocated for constitutional government, the separation of church and state, and the application of rational principles to social and political reform.
The Enlightenment emerged from and built upon the Scientific Revolution of the 16th and 17th centuries, which had established new methods of empirical inquiry through the work of figures such as Galileo Galilei, Johannes Kepler, Francis Bacon, Pierre Gassendi, Christiaan Huygens, and Isaac Newton. Philosophical foundations were laid by thinkers including René Descartes, Thomas Hobbes, Baruch Spinoza, and John Locke, whose ideas about reason, natural rights, and empirical knowledge became central to Enlightenment thought. The dating of the period of the beginning of the Enlightenment can be attributed to the publication of Descartes' Discourse on the Method in 1637, with his method of systematically disbelieving everything unless there was a well-founded reason for accepting it, and featuring his dictum, ('I think, therefore I am'). Others cite the publication of Newton's (1687) as the culmination of the Scientific Revolution and the beginning of the Enlightenment. European historians traditionally dated its beginning with the death of Louis XIV of France in 1715 and its end with the outbreak of the French Revolution in 1789. Many historians now date the end of the Enlightenment as the start of the 19th century, with the latest proposed year being the death of Immanuel Kant in 1804.
The movement was characterized by the widespread circulation of ideas through new institutions: scientific academies, literary salons, coffeehouses, Masonic lodges, and an expanding print culture of books, journals, and pamphlets. The ideas of the Enlightenment undermined the authority of the monarchy and religious officials and paved the way for the political revolutions of the 18th and 19th centuries. A variety of 19th-century movements, including liberalism, socialism, and neoclassicism, trace their intellectual heritage to the Enlightenment. The Enlightenment was marked by an increasing awareness of the relationship between the mind and the everyday media of the world, and by an emphasis on the scientific method and reductionism, along with increased questioning of religious dogma—an attitude captured by Kant's essay Answering the Question: What Is Enlightenment?, where the phrase ('dare to know') can be found.
The central doctrines of the Enlightenment were individual liberty, representative government, the rule of law, and religious freedom, in contrast to an absolute monarchy or single party state and the religious persecution of faiths other than those formally established and often controlled outright by the State. By contrast, other intellectual currents included arguments in favour of anti-Christianity, Deism and Atheism, accompanied by demands for secular states, bans on religious education, suppression of monasteries, the suppression of the Jesuits, and the expulsion of religious orders. The Enlightenment also faced contemporary criticism, later termed the "Counter-Enlightenment" by Sir Isaiah Berlin, which defended traditional religious and political authorities against rationalist critique.
Influential intellectuals
The Enlightenment was preceded by and closely associated with the Scientific Revolution. Earlier philosophers whose work influenced the Enlightenment included Francis Bacon, Pierre Gassendi, René Descartes, Thomas Hobbes, Baruch Spinoza, John Locke, Pierre Bayle, and Gottfried Wilhelm Leibniz.Sootin, Harry. Isaac Newton. New York: Messner (1955). Some of the figures of the Enlightenment included Cesare Beccaria, George Berkeley, Denis Diderot, Émilie Du Châtelet, David Hume, Immanuel Kant, Lord Monboddo, Montesquieu, Jean-Jacques Rousseau, Adam Smith, Roger Williams, Hugo Grotius, and Voltaire.
One of the most influential Enlightenment publications was the (Encyclopedia). Published between 1751 and 1772 in 35 volumes, it was compiled by Diderot, Jean le Rond d'Alembert, and a team of 150 others. The Encyclopédie helped spread the ideas of the Enlightenment across Europe and beyond.
Other publications of the Enlightenment included Locke's A Letter Concerning Toleration (1689) and Two Treatises of Government (1689); Berkeley's A Treatise Concerning the Principles of Human Knowledge (1710), Voltaire's Letters on the English (1733) and Philosophical Dictionary (1764); Du Châtelet's Foundations of Physics (1740); Hume's A Treatise of Human Nature (1740); Montesquieu's The Spirit of the Laws (1748); Rousseau's Discourse on Inequality (1754) and The Social Contract (1762); Cesare Beccaria's On Crimes and Punishments (1764); Adam Smith's The Theory of Moral Sentiments (1759) and The Wealth of Nations (1776), Kant's Critique of Pure Reason (1781), and at the close of the age, the pioneering proto-feminist text, Wollstoncraft's A Vindication Of The Rights Of Woman (1792).
Topics
Philosophy
Bacon's empiricism and Descartes' rationalist philosophy laid the foundation for enlightenment thinking. Descartes' attempt to construct the sciences on a secure metaphysical foundation was not as successful as his method of doubt applied to philosophy, which led to a dualistic doctrine of mind and matter. His skepticism was refined by Locke's Essay Concerning Human Understanding (1690) and Hume's writings in the 1740s. Descartes' dualism was challenged by Spinoza's uncompromising assertion of the unity of matter in his Tractatus (1670) and Ethics (1677).
According to Jonathan Israel, these laid down two distinct lines of Enlightenment thought: first, the moderate variety, following Descartes, Locke, and Christian Wolff, which sought accommodation between reform and the traditional systems of power and faith, and, second, the Radical Enlightenment, inspired by the philosophy of Spinoza, advocating democracy, individual liberty, freedom of expression, and eradication of religious authority. The moderate variety tended to be deistic whereas the radical tendency separated the basis of morality entirely from theology. Both lines of thought were eventually opposed by a conservative Counter-Enlightenment which sought a return to faith.
In the mid-18th century, Paris became the center of philosophic and scientific activity challenging traditional doctrines and dogmas. After the Edict of Fontainebleau in 1685, the relationship between church and the absolutist government was very strong. The early enlightenment emerged in protest to these circumstances, gaining ground under the support of Madame de Pompadour, the mistress of Louis XV. Called the Siècle des Lumières, the philosophical movement of the Enlightenment had already started by the early 18th century, when Pierre Bayle launched the popular and scholarly Enlightenment critique of religion. As a skeptic Bayle only partially accepted the philosophy and principles of rationality. He did draw a strict boundary between morality and religion. The rigor of his Dictionnaire Historique et Critique influenced many of the Enlightenment Encyclopédistes. By the mid-18th century the French Enlightenment had found a focus in the project of the Encyclopédie. The philosophical movement was led by Voltaire and Rousseau, who argued for a society based upon reason rather than faith and Catholic doctrine, for a new civil order based on natural law, and for science based on experiments and observation. The political philosopher Montesquieu introduced the idea of a separation of powers in a government, a concept which was enthusiastically adopted by the authors of the United States Constitution. While the philosophes of the French Enlightenment were not revolutionaries and many were members of the nobility, their ideas played an important part in undermining the legitimacy of the Old Regime and shaping the French Revolution.
Francis Hutcheson, a moral philosopher and founding figure of the Scottish Enlightenment, described the utilitarian and consequentialist principle that virtue is that which provides, in his words, "the greatest happiness for the greatest numbers." Much of what is incorporated in the scientific method (the nature of knowledge, evidence, experience, and causation) and some modern attitudes towards the relationship between science and religion were developed by Hutcheson's protégés in Edinburgh: David Hume and Adam Smith. Hume became a major figure in the skeptical philosophical and empiricist traditions of philosophy.
Kant tried to reconcile rationalism and religious belief, individual freedom and political authority, as well as map out a view of the public sphere through private and public reason. Kant's work continued to influence German intellectual life and European philosophy more broadly well into the 20th century.
Mary Wollstonecraft was one of England's earliest feminist philosophers. She argued for a society based on reason and that women as well as men should be treated as rational beings. She is best known for her 1792 work, A Vindication of the Rights of Woman.
Science
Science played an important role in Enlightenment discourse and thought. Many Enlightenment writers and thinkers had backgrounds in the sciences and associated scientific advancement with the overthrow of religion and traditional authority in favour of the development of free speech and thought. There were immediate practical results. The experiments of Antoine Lavoisier were used to create the first modern chemical plants in Paris, and the experiments of the Montgolfier brothers enabled them to launch the first manned flight in a hot air balloon in 1783.
Broadly speaking, Enlightenment science greatly valued empiricism and rational thought and was embedded with the Enlightenment ideal of advancement and progress. The study of science, under the heading of natural philosophy, was divided into physics and a conglomerate grouping of chemistry and natural history, which included anatomy, biology, geology, mineralogy, and zoology. As with most Enlightenment views, the benefits of science were not seen universally: Rousseau criticized the sciences for distancing man from nature and not operating to make people happier.