PANTHEON
ExploreBuild My Library
© 2026 Pantheon — an atlas of the ideas that shaped how we think.
book1689

A Letter Concerning Toleration

Disciplines:
political philosophy
theology

Summary

Locke's Letter Concerning Toleration (1689) is the founding document of secular liberalism, arguing that the state has no authority over religious belief.

Core Contribution

Locke argues that since faith is an inward act that cannot be compelled, the state has no legitimate authority over religious belief; true religion cannot be advanced by force; church and state have entirely separate jurisdictions — civil liberty and salvation respectively.

Key Spikes & Highlights

  • Forced faith impossibility (genuine religious conversion requires sincere inner assent; force can change behavior but not belief)
  • Church-state jurisdictional separation (the state governs external civil interests; the church governs the care of souls — neither may invade the other)
  • Toleration limits (Locke excluded atheists — who can't be trusted — and Catholics whose allegiance is to a foreign power)
  • Liberal precedent (established that the state may not coerce belief — the foundation of all subsequent religious freedom arguments)

Historical Influences

John Locke

Intellectual Lineage

Protestant theology of conscienceNatural rights tradition Arminian liberalism

Allied Works

Two Treatises of Government Jerusalem by MendelssohnOn Liberty

Contemporaries & Peers

Two Treatises of Government An Essay Concerning Human Understanding

Minds Influenced

No recorded minds influenced.

Intellectual Posterity

Church-state separation doctrineReligious liberty principleSecular liberalism

Discussing

A Letter Concerning Toleration

Ask anything about A Letter Concerning Toleration — their ideas, influences, contradictions, legacy.

Sign in to start a conversation.