Skip to content

Classical Reference Library

Enlightenment Philosophy

Explore the thinkers and ideas of the Enlightenment, from reason, freedom, and human nature to questions of knowledge, morality, society, and political authority.

Lectures

MODERN POLITICAL THOUGHT

Why Should I Obey the State?

Ian Johnston examines why citizens should obey the state, comparing the political ideas of Machiavelli, Hobbes, Locke, Rousseau, and Marx and their competing views of authority, liberty, equality, consent, and justice.

Read resource →

Student Guides

STUDENT’S GUIDE · REASON, DOUBT & THE SEARCH FOR CERTAINTY

Discourse on the Method — A Student’s Guide

A student-friendly introduction to René Descartes’ Discourse on the Method, with an overview of its six parts, explanations of key philosophical ideas, reading suggestions, discussion questions, and an activity applying Descartes’ method to everyday claims.

Read resource →

STUDENT’S GUIDE · ENLIGHTENMENT THOUGHT & MORAL PROGRESS

Discourse on the Sciences and the Arts — A Student’s Guide

An accessible introduction to Rousseau’s 1750 argument that advances in science, literature, and the arts do not necessarily improve human morality. Explores virtue, manners, luxury, vanity, and the meaning of progress, with reading questions and a contemporary comparison activity.

Read resource →

STUDENT’S GUIDE · DOUBT, KNOWLEDGE & THE THINKING SELF

Meditations on First Philosophy — A Student’s Guide

An accessible guide to Descartes’ six meditations, introducing methodical doubt, the cogito, the wax example, mind–body dualism, and the search for certainty. Includes reading prompts, discussion questions, and a practical activity.

Read resource →

STUDENT’S GUIDE · PEACE, GOVERNMENT & INTERNATIONAL JUSTICE

On Perpetual Peace — A Student’s Guide

An accessible guide to Kant’s On Perpetual Peace, explaining the six preliminary articles, three definitive articles, republican constitutions, a federation of free states, and cosmopolitan hospitality. Includes reading prompts, discussion questions, and an activity designing a peace agreement.

Read resource →

Teacher Guides

TEACHER’S GUIDE · MODERN PHILOSOPHY & GREEK TRAGEDY

A Teacher’s Guide to Friedrich Nietzsche’s The Birth of Tragedy

A teaching guide to Nietzsche’s The Birth of Tragedy, exploring Apollonian and Dionysian artistic forces, the origins of Greek tragedy, Socrates, Euripides, and the philosophical significance of art. Includes discussion questions, close-reading suggestions, and classroom activities.

Read resource →

TEACHER’S GUIDE · REASON, DOUBT & SCIENTIFIC INQUIRY

Discourse on the Method — A Teacher’s Guide

A guide to teaching René Descartes’ Discourse on the Method, exploring the four rules of inquiry, methodical doubt, the thinking self, provisional morality, and the relationship between philosophical reasoning and scientific investigation. Includes teaching objectives, discussion questions, and classroom activities.

Read resource →

TEACHER’S GUIDE · ENLIGHTENMENT PHILOSOPHY & MORAL PROGRESS

Discourse on the Sciences and the Arts — A Teacher’s Guide

A guide to teaching Rousseau’s provocative 1750 discourse, examining whether advances in science, literature, and the arts improve human morality. Explores virtue, luxury, social appearances, and historical argument, with discussion questions, close-reading suggestions, and a classroom activity.

Read resource →

TEACHER’S GUIDE · DOUBT, CERTAINTY & THE MIND

Meditations on First Philosophy — A Teacher’s Guide

A guide to teaching René Descartes’ Meditations on First Philosophy, examining its six meditations, the cogito, arguments concerning God, mind–body dualism, and the search for certainty. Includes teaching objectives, close-reading passages, discussion questions, and classroom approaches.

Read resource →

TEACHER’S GUIDE · POLITICAL PHILOSOPHY & INTERNATIONAL PEACE

On Perpetual Peace — A Teacher’s Guide

A guide to teaching Kant’s On Perpetual Peace, examining the preliminary and definitive articles, republican constitutions, a federation of free states, cosmopolitan hospitality, and the relationship between morality and political expediency. Includes discussion questions, close-reading suggestions, and a classroom activity.

Read resource →

TEACHER’S GUIDE · ENLIGHTENMENT SCIENCE & COSMIC ORIGINS

Universal Natural History and Theory of the Heavens — A Teacher’s Guide

A guide to teaching Immanuel Kant’s Universal Natural History and Theory of the Heavens, exploring the nebular hypothesis, Newtonian physics, cosmic development, and the relationship between scientific explanation and religious belief. Includes close-reading passages, discussion questions, and classroom activities.

Read resource →

Refine these resources