Thyran

Source: All texts are from Project Gutenberg, a library of free public domain books.

What's included: Works where the US copyright has expired (generally published before 1929 or by authors who died before ~1954). This includes:

• Ancient philosophers: Plato, Aristotle, Epictetus, Seneca, Confucius
• Enlightenment: Kant, Hume, Locke, Spinoza, Rousseau, Voltaire
• 19th Century: Nietzsche, Hegel, Kierkegaard, Marx, Schopenhauer
• Early 20th Century: Bertrand Russell, Freud, William James, John Dewey

What's NOT included: Works still under copyright, such as:

• Wittgenstein (died 1951) – Tractatus has complex status
• Heidegger (died 1976) – Being and Time copyrighted until 2046
• Sartre, Foucault, Derrida, and most post-WWII philosophers

Current corpus: 420 verified books · 66,321 indexed passages · 294 authors

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📚 Special thanks to Project Gutenberg for making thousands of public domain books freely available. Their mission to digitize and archive cultural works makes projects like this possible.