- Ethics — Part 2
- The Child at Home
- Utilitarianism
- The Philosophy of the Moral Feelings
- The Young Woman's Guide
- Beyond Good and Evil
- The Selections from the Principles of Philosophy
- What is Property?
- Essays
- Advice to a Young Man upon First Going to Oxford
- Siouan Sociology
- Improvement of the Understanding
- Categoriae. English
- Book of Wise Sayings
- Thoughts out of Season Part I
- The Prince
- Chinese Literature
- Plato and Platonism
- Study of a Woman
- A Philosophical Dictionary, Volume 4
- Civil Disobedience
- The Republic
- The System of Nature, Volume 1
- Auguste Comte and Positivism
- Secret Societies
- The Three Brides
- Notes from the Underground
- Dialogues Concerning Natural Religion
- The Ethics of Aristotle
- Esprit des lois
- The Map of Life
- Littérature et Philosophie mêlées
- Homer and Classical Philology
- Sophist
- Sophist
- Ion
- Statesman
- Lessons in Life, for All Who Will Read Them
- The Physical Life of Woman:
- The Destiny of Man
- A Essay Towards a New Theory of Vision
- Plutarch's Morals
- Ethics — Part 1
- The Unseen World and Other Essays
- Letters to His Son on the Art of Becoming a Man of the World and a Gentleman, 1751
- How to Marry Well
- The Memorable Thoughts of Socrates
- The Friendships of Women
- Essays
- The Metaphysical Elements of Ethics
- The Consolation of Philosophy
- Letters to His Son on the Art of Becoming a Man of the World and a Gentleman, 1753-54
- Probabilities : An aid to Faith
- Ancient and Modern Celebrated Freethinkers
- Philebus
- An Enquiry Concerning Human Understanding
- The Ego and His Own
- The Critique of Pure Reason
- The Holy war, made by King Shaddai upon Diabolus, for the regaining of the metropolis of the world; ...
- Ethics — Part 3
- The Cannibal Islands
- Protagoras
- Apology, Crito, and Phaedo of Socrates
- Old-Fashioned Ethics and Common-Sense Metaphysics
- The Ruins, or, Meditation on the Revolutions of Empires and the Law of Nature
- L'homme Qui Rit
- Politics: A Treatise on Government
- Seekers after God
- Petty Troubles of Married Life, Second Part
- Practical Essays
- A Lie Never Justifiable
- An Essay on the Principle of Population
- The Critique of Practical Reason
- Native Races and the War
- The Soul of Man under Socialism
- The Golden Sayings of Epictetus
- Crito
- Thus Spake Zarathustra
- The Mechanism of the Human Voice
- Poetics. English
- How To Behave: A Pocket Manual of Republican Etiquette, and Guide to Correct Personal Habits
- Ethics — Part 5
- A Treatise of Human Nature
- A Philosophical Dictionary, Volume 10
- Feuerbach: The roots of the socialist philosophy
- A Treatise Concerning the Principles of Human Knowledge
- Ainsi Parlait Zarathoustra
- Ethics — Part 4
- Apology
- Another Study of Woman
- Fundamental Principles of the Metaphysic of Morals
- The Physiology of Marriage, Part 2
- Laws
- The Dark House
- Discours de la méthode
- Modern Women and What is Said of Them
- The Philosophy of Evolution
- Our Fathers Have Told Us
- Phaedo
- The Existence of God