- Liberalism
- Vindication of the Rights of Woman
- Filosofía Fundamental, Tomo I
- Walden
- The Soul of Man under Socialism
- Sophist
- O Federalismo
- The Heart of the New Thought
- Auguste Comte and Positivism
- The Existence of God
- The Ethics of Aristotle
- Feuerbach: The roots of the socialist philosophy
- Littérature et Philosophie mêlées
- Le Jardin d'Épicure
- Ion
- The Place of Anarchism in Socialistic Evolution
- Le féminisme français I
- Parmenides
- A Saudade
- Homer and Classical Philology
- The Critique of Pure Reason
- Fundamental Principles of the Metaphysic of Morals
- Book of Wise Sayings
- Discours de la méthode
- Ethica. English
- The Metaphysical Elements of Ethics
- Ancient and Modern Celebrated Freethinkers
- Hinduism and Buddhism, An Historical Sketch, Vol. 2
- Philebus
- The Consolation of Philosophy
- Flores do Campo
- Utilitarianism
- Protagoras
- The Golden Sayings of Epictetus
- The Golden Sayings of Epictetus
- A philosophia da natureza dos naturalistas
- Woman under socialism
- Catherine De Medici
- The Essays of Arthur Schopenhauer; Studies in Pessimism
- Crime: Its Cause and Treatment
- The Philosophy of Spinoza
- The Philosophy of the Moral Feelings
- Sociologia Chinesa: Autoplastia
- Gorgias
- Notes from the Underground
- Kritik der reinen Vernunft
- A Treatise of Human Nature
- Initiation into Philosophy
- The Royal Wedding - Official Souvenir Programme
- The Memorable Thoughts of Socrates
- Anarchism and Socialism
- Politics: A Treatise on Government
- The Critique of Practical Reason
- Tragic Sense Of Life
- De profundis
- Ethics — Part 1
- A Essay Towards a New Theory of Vision
- Apology
- Improvement of the Understanding
- Ainsi Parlait Zarathoustra
- Hinduism and Buddhism, An Historical Sketch, Vol. 3
- El Criterio
- Essays of Schopenhauer
- Thus Spake Zarathustra
- The Ego and His Own
- Ethica
- Phaedo
- Thoughts out of Season Part I
- Moral Philosophy
- Essays
- Herland
- Filosofía Fundamental, Tomo II
- Essays
- Timaeus
- Beyond Good and Evil
- Shorter Prose Pieces
- Laws
- Phaedrus
- The Selections from the Principles of Philosophy
- Chinese Literature
- The Philosophy of Evolution
- L'homme Qui Rit
- Apology, Crito, and Phaedo of Socrates
- Novelas de Voltaire — Tomo Primero
- The Prince
- Ethics — Part 3
- A Selection from the Discourses of Epictetus with the Encheiridion
- A viagem da Índia
- The Republic
- How to Observe
- Despedidas: 1895-1899
- A Short History of Greek Philosophy
- L'arte di prender marito
- Civil Disobedience
- Filosofía Fundamental, Tomo IV
- Criminal Sociology
- Youth and Sex
- Critias
- Hinduism and Buddhism, An Historical Sketch, Vol. 1
- Plato and Platonism