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Welcome to Ergo

Welcome to Ergo. We publish in-depth philosophy courses taught by leading scholars. Explore philosophy from the ancient world to the present, alongside foundational ideas across the arts and sciences. We are a nonprofit, and every course is freely available.

Popular Excerpts

Excerpts taken from the full lecture courses.

Nietzsche's Death of God Kant: How Your Mind Builds Reality The Paradox of Gabriel's Horn Descartes Ontological Proof of God The Halting Problem The Origins of Quantum Mechanics Algorithmic Shortcuts Superpositions Quantum Computers & The Extended Church-Turing Thesis

Our Courses

The complete lecture series the excerpts are clipped from.

Kant’s Three Questions

Kant’s Three Questions

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REED WINEGAR surveys Kant's revolutionary philosophy, from the limits of human knowledge to morality, freedom, and religion.

 From Socrates to Sartre: How Should We Live?

From Socrates to Sartre:How Should We Live?

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LEE BRAVER walks through the great ethical theories of Western philosophy, from Socrates' founding questions to Mill, Kant, Aristotle, and Sartre's existential challenge.

 From Descartes to Nietzsche: The Birth of Science and the Death of God

From Descartes to Nietzsche:The Birth of Science and the Death of God

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LEE BRAVER leads a tour through Descartes, Hume, Kant, and Nietzsche, showing how each attempt to secure certainty gave way to deeper skepticism about truth itself.

 Quantum Mechanics and the Crisis of Scientific Realism

Quantum Mechanics and the Crisis of Scientific Realism

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DAVID ALBERT opens with strange experiments on electrons, builds up to the measurement problem, and ends on attempts to solve the deepest question posed by quantum mechanics: can science describe reality at all?

 Introduction to Spinoza and His Theory of Love

Introduction to Spinoza and His Theory of Love

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NOA LAHAV AYALON traces Spinoza's philosophy from its metaphysical foundations to his vision of love and human flourishing.

 Lectures on Infinity

Lectures on Infinity

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JOEL DAVID HAMKINS guides viewers through the great paradoxes and discoveries about infinity, from Zeno's ancient puzzles to Cantor's revolutionary proof that some infinities are larger than others.

 Plato’s Theaetetus: An Inquiry into Knowledge

Plato’s Theaetetus:An Inquiry into Knowledge

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RICHARD POLT guides listeners through Plato's Theaetetus in this introductory seminar, asking whether knowledge is perception and why radical relativism fails.

 Computation as a Universal and Fundamental Concept

Computation as a Universal and Fundamental Concept

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TIM ROUGHGARDEN treats computation as a law of nature, tracing its arc from Turing's proof that some problems are unsolvable to the P versus NP question at the heart of modern computer science.

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