- The Critique of Pure Reason
- Practical Essays
- Ancient and Modern Celebrated Freethinkers
- Ethics — Part 3
- Apology, Crito, and Phaedo of Socrates
- Lysis
- The Metaphysical Elements of Ethics
- An Enquiry Concerning Human Understanding
- Statesman
- Fundamental Principles of the Metaphysic of Morals
- How To Behave: A Pocket Manual of Republican Etiquette, and Guide to Correct Personal Habits
- Homer and Classical Philology
- The Soul of Man under Socialism
- How to Observe
- Old-Fashioned Ethics and Common-Sense Metaphysics
- L'homme Qui Rit
- The Golden Sayings of Epictetus
- The Critique of Practical Reason
- Littérature et Philosophie mêlées
- A Man's Value to Society
- Politics: A Treatise on Government
- The Memorable Thoughts of Socrates
- Ethics — Part 1
- The Essays of Arthur Schopenhauer; Studies in Pessimism
- A Essay Towards a New Theory of Vision
- The Ethics of Aristotle
- The Philosophy of Spinoza
- On Being Human
- The Destiny of Man
- A Philosophical Dictionary, Volume 4
- Notes from the Underground
- Book of Wise Sayings
- The Ego and His Own
- Quotes and Images From The Confessions of J. J. Rousseau
- Quotes and Images From The Confessions of J. J. Rousseau
- Sophist
- The Map of Life
- Levels of Living
- The Consolation of Philosophy
- The Unseen World and Other Essays
- Philosophie de la Liberté (Tome I)
- Essays
- Laws
- The Young Woman's Guide
- Our Fathers Have Told Us
- The Philosophy of the Moral Feelings
- The Law and the Word
- Improvement of the Understanding
- Utilitarianism
- When a Man Comes to Himself
- Categoriae. English
- Moral Philosophy
- Thoughts out of Season Part I
- The Prince
- Essays of Schopenhauer
- A Short History of Greek Philosophy
- A Treatise of Human Nature
- Tragic Sense Of Life
- Theologico-Political Treatise — Part 4
- De profundis
- The Republic
- Querist
- Initiation into Philosophy
- Ethics — Part 2
- Chinese Literature
- Phaedrus
- The Philosophy of Despair
- The System of Nature, Volume 1
- The System of Nature, Volume 2
- A Lie Never Justifiable
- The Existence of God
- Analysis of Mr. Mill's System of Logic
- Feuerbach: The roots of the socialist philosophy
- A System of Logic: Ratiocinative and Inductive
- 颜氏家训
- Walden
- A Treatise Concerning the Principles of Human Knowledge
- Thus Spake Zarathustra
- Literary and Philosophical Essays: French, German and Italian
- Ethics — Part 4
- The Heart of the New Thought
- The Investment of Influence
- Pantheism, Its Story and Significance
- Liberalism
- Ethics — Part 5
- A Philosophical Dictionary, Volume 10
- Poetics. English
- The Philosophy of the Conditioned
- The Philosophy of Evolution
- The Selections from the Principles of Philosophy
- The Physiology of Marriage, Part 2
- A Selection from the Discourses of Epictetus with the Encheiridion
- Theodicy
- Democracy and Social Ethics
- Myth and Science
- Shorter Prose Pieces
- The Theological Tractates and The Consolation of Philosophy
- Beyond Good and Evil
- A Philosophical Dictionary, Volume 1
- Apology