BEYOND THE TEXT · ARTICLE

What Can We Really Know? Kant’s Critique of Pure Reason

Beyond the Text: Who Was Kant, and What Is Enlightenment? Burgundy episode artwork with a historical portrait of Immanuel Kant.

Kant · Episode 2 of 3 · Samuel Woodall and Jack Thomson

What can we really know, and where must reason recognise its limits? This conversation explores Hume’s challenge, synthetic a priori knowledge, Kant’s Copernican turn, space and time, appearances and things in themselves, and the antinomies of reason.

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From knowledge to freedom

The discussion ends by asking how the limits of theoretical knowledge lead towards freedom and moral responsibility. Read the second-edition Preface to the Critique of Pure Reason alongside the conversation, distinguishing the conditions of experience from claims to knowledge beyond possible experience.

Audio chapters

These timings reproduce the published episode description.

00:00 Introduction

00:25 Science and the crisis of metaphysics

01:27 Synthetic a priori knowledge and Hume

05:09 Kant’s Copernican turn

06:35 Concepts, intuitions and the soul

10:17 Appearances, things in themselves and antinomies

18:19 The limits of reason and moral freedom

20:07 Next: freedom and moral duty

Editorial clarifications

Kant’s appearances are empirically real, rather than false pictures hiding reality. The distinction concerns objects as experienced and considered independently of our mode of cognition. Hume’s problem of causal necessity is distinct from the is–ought problem in moral reasoning.

Reading

Kant, Critique of Pure Reason (1781; revised 1787), second-edition Preface and A51/B75; Prolegomena to Any Future Metaphysics (1783).

Continue exploring

Discuss Kant, authority and independent judgement

Released 21 October 2026.

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Cite this episode

Woodall, Samuel, and Jack Thomson. “What Can We Really Know? Kant’s Critique of Pure Reason.” Beyond the Text. 21 October 2026. Permalink.


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