- The Golden Sayings of Epictetus
- The Composition of Indian Geographical Names
- Crito
- The Essays of Montaigne — Volume 01
- A Young Hero
- Practical Essays
- In Praise of Folly
- The Holy war, made by King Shaddai upon Diabolus, for the regaining of the metropolis of the world; ...
- The Friendships of Women
- Apology, Crito, and Phaedo of Socrates
- An Enquiry Concerning Human Understanding
- Discours de la méthode
- The Critique of Pure Reason
- The Metaphysical Elements of Ethics
- Fundamental Principles of the Metaphysic of Morals
- Old-Fashioned Ethics and Common-Sense Metaphysics
- The English Utilitarians, Volume I.
- An Essay on the Principle of Population
- Homer and Classical Philology
- The Critique of Practical Reason
- Seekers after God
- Politics: A Treatise on Government
- L'homme Qui Rit
- A Philosophical Dictionary, Volume 10
- The Existence of God
- The Mechanism of the Human Voice
- A Lie Never Justifiable
- Auguste Comte and Positivism
- Feuerbach: The roots of the socialist philosophy
- Thus Spake Zarathustra
- How To Behave: A Pocket Manual of Republican Etiquette, and Guide to Correct Personal Habits
- Critias
- Modern Women and What is Said of Them
- A Philosophical Dictionary, Volume 1
- A Philosophical Dictionary, Volume 1
- 鬼谷子
- The Physiology of Marriage, Part 2
- Shorter Prose Pieces
- The Selections from the Principles of Philosophy
- An American Girl Abroad
- Laws
- Essays
- The Philosophy of Evolution
- Poetics. English
- Apology
- Essays
- Another Study of Woman
- Beyond Good and Evil
- A Historical Survey of the Customs, Habits, & Present State of the Gypsies
- The Young Woman's Guide
- The Philosophy of the Moral Feelings
- Secret Societies
- Thoughts out of Season Part I
- Civil Disobedience
- Utilitarianism
- The Child at Home
- The Prince
- Essays of Schopenhauer
- The Dark House
- Book of Wise Sayings
- Ainsi Parlait Zarathoustra
- Plato and Platonism
- The System of Nature, Volume 1
- The Republic
- Myths and myth-makers
- Categoriae. English
- Study of a Woman
- The Ethnology of the British Islands
- Improvement of the Understanding
- A Treatise of Human Nature
- Theologico-Political Treatise — Part 4
- Chinese Literature
- Speech of Mr. Cushing, of Massachusetts, on the Right of Petition,
- Advice to a Young Man upon First Going to Oxford
- Among My Books
- Dialogues Concerning Natural Religion
- The Memorable Thoughts of Socrates
- Philosophical Letters of Frederich Schiller
- The Ethics of Aristotle
- The Philosophy of Spinoza
- Littérature et Philosophie mêlées
- Rollo's Philosophy. [Air]
- The Three Brides
- The Soul of Man under Socialism
- A Essay Towards a New Theory of Vision
- The Map of Life
- A Philosophical Dictionary, Volume 4
- A Philological Essay Concerning the Pygmies of the Ancients
- Ethica. English
- De l'importance des livres de raison
- Notes from the Underground
- The Destiny of Man
- Lessons in Life, for All Who Will Read Them
- Heart's-ease
- Stray Pearls
- Statesman
- Ethics — Part 1
- Ceci n'est pas un conte
- How to Marry Well
- Searchlights on Health: Light on Dark Corners