The Enlightenment

The Enlightenment was the eighteenth-century intellectual movement that championed reason, empirical inquiry, individual liberty, and critical scrutiny of authority and tradition.

Definition

The transnational intellectual movement of roughly the long eighteenth century that emphasized reason, science, skepticism toward established authority, and the improvement of human society.

Scope

This topic examines the Enlightenment as a historical movement: its philosophical currents from Locke and Newton through the philosophes of France, its dissemination through salons, journals, and the Encyclopedie, and its varied national forms in Scotland, France, the German lands, and the Atlantic colonies. It addresses the movement's relation to religion, politics, and empire, and the major historiographical debates over its unity, radicalism, and legacy for modernity.

Core questions

• What did Enlightenment thinkers mean by reason and how did they use it to criticize authority?
• Was the Enlightenment a single movement or a set of distinct national and regional Enlightenments?
• How were Enlightenment ideas spread and to whom?
• What is the Enlightenment's legacy, for good or ill, in modern political thought?

Key concepts

• reason and critique
• the public sphere
• natural rights
• the Encyclopedie
• religious toleration

Key theories

The Radical Enlightenment thesis

Jonathan Israel argued that a radical, Spinoza-inspired current rejecting religious authority and asserting democracy and equality formed the true core of the Enlightenment, distinct from a moderate mainstream.

Enlightenment as a social and publishing phenomenon

Robert Darnton studied the Enlightenment through book history and the trade in the Encyclopedie, showing how ideas circulated as commodities through networks of printers, publishers, and readers.

History

The eighteenth century saw thinkers across Europe and the Atlantic apply critical reason to religion, politics, and society, building on the scientific revolution and seventeenth-century philosophy. Kant's 1784 essay defining enlightenment as humanity's emergence from self-imposed immaturity became a touchstone, while later historians debated the movement's coherence and consequences.

Debates

One Enlightenment or many

Scholars dispute whether there was a single Enlightenment or multiple national and confessional Enlightenments with divergent values, and whether a radical core can be separated from a moderate one.

The Enlightenment's legacy

Debate continues over whether the Enlightenment underwrote liberal democracy and human rights or, as critics from the Frankfurt School onward argued, also fostered instrumental reason and new forms of domination.

Key figures

• Jonathan Israel
• Peter Gay
• Robert Darnton
• Immanuel Kant
• Voltaire

Seminal works

• israel2001
• gay1966
• darnton1979

Frequently asked questions

What was the Enlightenment's central idea?

Most accounts emphasize the confident use of reason and critical inquiry to examine religion, government, and society, though thinkers differed sharply on conclusions and there was no single doctrine.

Did the Enlightenment cause the French Revolution?

Enlightenment ideas shaped revolutionary language and goals, but historians reject any simple causal link, stressing that political, fiscal, and social factors were also decisive.