Topic 4.3 Notes – The Enlightenment

What the Enlightenment Was

The Enlightenment grew out of the Scientific Revolution. People had seen Newton and others uncover laws of nature, so thinkers asked a huge follow-up question. If nature has discoverable laws, maybe society does too.

• Core habits of thought included reason, empiricism (knowledge from observation), skepticism, and the search for natural laws.
• Core values included natural rights, toleration, utility (what works for the public good), and progress.
• Its biggest attack on the Old Regime was this idea that authority had to earn respect through reason. Divine right, custom, and inherited privilege were no longer enough by themselves.
• It was not one ideology. Some thinkers liked liberty, some liked strong government, some defended religion in new ways, and some attacked it.
• Kant captured the attitude in “What Is Enlightenment?”. His point was simple. Dare to know. Use your own understanding instead of depending on authority.

Immanuel Kant

The Main Enlightenment Ideas About Society and Government

A lot of Enlightenment politics starts with the social contract. Government exists because people create it for a purpose.

Hobbes

In Leviathan, Hobbes argued that without government, life would be violent and insecure. People therefore give power to a strong sovereign for protection. This matters because Enlightenment-style reasoning did not always lead to democracy.

Locke

Locke gave the most AP-testable version of limited government.

• Two Treatises of Government argued for natural rights to life, liberty, and property.
• Government exists by consent to protect those rights.
• If it fails, people have a right of rebellion.
• In Essay Concerning Human Understanding, Locke described the mind as tabula rasa, a blank slate shaped by experience. That made education and environment look more important than birth.

Montesquieu

In The Spirit of the Laws, Montesquieu compared governments almost like a scientist compares systems.

• He argued for separation of powers to stop despotism.
• His ideas later shaped constitutional governments, especially checks and balances.

Rousseau

Rousseau pushed farther toward equality and collective rule.

• In The Social Contract, sovereignty belongs to the people.
• The general will meant the common good, not just individual wants added together.
• In Discourse on Inequality, he argued that civilization and private property created inequality.

Beccaria

In On Crimes and Punishments, Beccaria applied reason to law.

• Punishments should be clear, proportionate, prompt, and meant to deter.
• He attacked torture and the death penalty as irrational and unjust.

The Main Enlightenment Ideas About Economics and Religion

The same critical spirit hit economics and religion.

Economics

Thinkers challenged mercantilism, monopolies, and heavy regulation.

Smith’s “invisible hand” meant that individual self-interest in competitive markets could produce wider benefits.

Religion

Enlightenment religion was a spectrum, not one view.

• Deism taught that a creator could be known through reason and nature rather than revelation or church authority.
• Voltaire attacked intolerance, censorship, fanaticism, and clerical privilege in works like Letters Concerning the English Nation and Candide.
• Diderot edited the Encyclopédie, which spread practical knowledge and criticism of superstition.
• Hume used skepticism to question miracles and certainty in religion.
• Baron d’Holbach argued for materialism and atheism.
• German Pietism showed faith stayed powerful. It emphasized inner devotion and revival rather than reason alone.

Title page of Diderot’s Encyclopédie (1751)

How Enlightenment Ideas Spread

The Enlightenment was transnational. Important cities included Paris, London, Edinburgh, Amsterdam, Geneva, Berlin, Vienna, Milan, and Naples. The network of correspondence known as the Republic of Letters tied many of these centers together.

Republic of Letters network in Europe

The Republic of Letters linked thinkers through travel, letters, and print.

Ideas spread through:

• salons, often run by women like Madame Geoffrin
• coffeehouses, where people read and argued about public affairs
• academies and essay contests
• lending libraries
• Masonic lodges
• books, pamphlets, journals, newspapers, and the Encyclopédie

Censorship still existed, so writers used satire, anonymity, foreign presses, and underground printing. All of this helped create a public sphere, meaning discussion outside church and court control.

Limits and Consequences of Enlightenment Thought

Enlightenment ideas weakened divine-right monarchy, criticized hereditary privilege, and made rights, consent, utility, and the public good normal ways to judge government. They encouraged reform in law, religion, education, and economics, and they gave later revolutionaries language to use in America and France.

The limits matter just as much.

• Many philosophes wanted elite reform, not mass democracy.
• Equality often stopped at property, sex, and status.
• Rousseau excluded women from politics in Émile.
• Mary Wollstonecraft, in A Vindication of the Rights of Woman, and Condorcet used Enlightenment logic to challenge that exclusion.