- Charmides
- Apology, Crito, and Phaedo of Socrates
- Statesman
- Ethics — Part 3
- How To Behave: A Pocket Manual of Republican Etiquette, and Guide to Correct Personal Habits
- Lessons in Life, for All Who Will Read Them
- The Critique of Pure Reason
- Ethics in Service
- How to Observe
- Letters to His Son on the Art of Becoming a Man of the World and a Gentleman, 1751
- Criminal Sociology
- The Metaphysical Elements of Ethics
- Ancient and Modern Celebrated Freethinkers
- Fundamental Principles of the Metaphysic of Morals
- The Map of Life
- The Friendships of Women
- An Enquiry Concerning Human Understanding
- The Soul of Man under Socialism
- The Heart of the New Thought
- Littérature et Philosophie mêlées
- The Golden Sayings of Epictetus
- Seekers after God
- A Man's Value to Society
- A System of Logic: Ratiocinative and Inductive
- The Evolution of Man — Volume 1
- Empire Builders
- Apology
- A Philosophical Dictionary, Volume 1
- Ethics — Part 4
- Analysis of Mr. Mill's System of Logic
- Ethics — Part 5
- The Physiology of Marriage, Part 2
- A Short History of Greek Philosophy
- A Lie Never Justifiable
- A Lie Never Justifiable
- A Philosophical Dictionary, Volume 10
- The Ruins, or, Meditation on the Revolutions of Empires and the Law of Nature
- Thus Spake Zarathustra
- Essays
- Liberalism
- The Law and the Word
- Democracy and Social Ethics
- The Mechanism of the Human Voice
- The Faith of Our Fathers
- Our Fathers Have Told Us
- The Investment of Influence
- Essays
- The Existence of God
- Laws
- Beyond Good and Evil
- Poetics. English
- Little Essays of Love and Virtue
- The Selections from the Principles of Philosophy
- The Philosophy of Evolution
- When a Man Comes to Himself
- The Basis of Morality
- Another Study of Woman
- The Prince
- Myth and Science
- Improvement of the Understanding
- How to Marry Well
- Categoriae. English
- The Republic
- Black Rebellion
- Civil Disobedience
- Youth and Sex
- Notes from the Underground
- Thoughts out of Season Part I
- Moral Philosophy
- Ethics — Part 2
- The Child at Home
- Initiation into Philosophy
- The Philosophy of the Moral Feelings
- The Royal Wedding - Official Souvenir Programme
- A Treatise of Human Nature
- The Young Woman's Guide
- Secret Societies
- American Negro Slavery
- Politics: A Treatise on Government
- The Critique of Practical Reason
- Morals in Trade and Commerce
- Chinese Literature
- A Philosophical Dictionary, Volume 4
- On Being Human
- A Essay Towards a New Theory of Vision
- Study of a Woman
- Crime: Its Cause and Treatment
- Black and White
- Book of Wise Sayings
- Arrows of Freethought
- The Destiny of Man
- The Ego and His Own
- The Consolation of Philosophy
- Levels of Living
- Utilitarianism
- The Memorable Thoughts of Socrates
- Sophist
- The Ethics of Aristotle
- The Unseen World and Other Essays
- Women's Wild Oats