KANT’S CRITIQUE OF PURE REASON THIS WAY UP A fresh series of guides to the central works of the philosophical canon suit- able for student readers. Th e books provide clear and authoritative exposition of each text’s central ideas and their importance in the history of philosophy. Th e series aims to make the texts less forbidding for the beginning reader and provide a reliable source of guidance to which way is up. KANT’S CRITIQUE OF PURE REASON AN INTRODUCTION AND INTERPRETATION JAMES R. O’SHEA First published in 2012 by Acumen Published 2014 by Routledge 2 Park Square, Milton Park, Abingdon, Oxon OX14 4RN 711 Third Avenue, New York, NY 10017, USA Routledge is an imprint of the Taylor & Francis Group, an informa business © James R. O’Shea 2012 Excerpts from Immanuel Kant, Critique of Pure Reason, translated and edited by Paul Guyer and Allen W. Wood (Cambridge: Cambridge University Press, 1998), © Cambridge University Press, reprinted with permission of the publisher and editors. 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For Karina, Betty and James Thisp agei ntentionallleyf tb lank This page intentionally left blank CONTENTS Preface ix INTRODUCTION 1 A brief sketch of Kant’s life and the historical context 1 Approaching the text of Kant’s Critique of Pure Reason 11 1 METAPHYSICS AND THE “FIERY TEST OF CRITIQUE” 13 1.1 Rational metaphysics: the highest aims of speculative reason 13 1.2 ‘Appearances’ versus ‘things in themselves’: Kant’s transcendental idealism 26 2 WAKING FROM DOGMATIC SLUMBERS: HUME AND THE ANTINOMIES 40 2.1 Hume’s scepticism and the problem of synthetic a priori judgments 40 2.2 Th e Antinomies of Pure Reason 50 2.3 Elusive totalities and the interests of reason: Kant’s critical solution 62 3 SPACE AND TIME AS FORMS OF HUMAN SENSIBILITY 78 3.1 Space and time as pure forms of sensory intuition 82 3.2 Assessing Kant’s transcendental idealism concerning space and time 97 3.3 Th e problem of aff ection and ‘things in themselves’ 106 vii CONTENTS 4 THE CATEGORIES OF UNDERSTANDING AND THE THINKING SELF 116 4.1 Conceptual thinking: the categories as a priori forms of understanding 116 4.2 Th e Transcendental Deduction of the Categories 132 5 ONE LAWFUL NATURE 158 5.1 Applying categories to the world in the Principles of Pure Understanding 158 5.2 Substance and causality, self and nature: a metaphysics of experience 173 6 CONCLUSION: PURE REASON’S ROLE IN KANT’S METAPHYSICS OF NATURE 205 6.1 Clipping the wings of pure speculative reason 205 6.2 Kant’s critique of speculative theology in “Th e Ideal of Pure Reason” 207 6.3 Th e validity of pure reason’s immanent regulative principles 214 Bibliography 225 Index 231 viii PREFACE Th e aim of this book is to provide a clear introduction to the central argu- ments of the Critique of Pure Reason at a level designed for both undergradu- ate and graduate students as well as any other readers interested in the main contentions and arguments of Kant’s revolutionary book. In order to achieve a relatively fl uid and readable introduction to such a notoriously diffi cult text, it was agreed to limit the scholarly engagement with other commentaries and with disputes in the secondary literature to just the occasional in-t ext refer- ence to particularly infl uential recent contributions by (primarily English- language) commentators on Kant, without any apparatus of notes. I have also had to make decisions about which sections of the book to treat in depth and which to treat more briefl y, and the index is the way to locate the latter discus- sions. Within the restricted scope of this book, however, what follows is not a superfi cial introduction to Kant’s thought but rather an attempt to analyse, explain and assess the main lines of argument that occur in most of the more famous sections of the Critique. In places in each chapter I have also taken matters more deeply and have not held back from off ering my own recon- structive interpretations of Kant’s views, some of which may be of interest to more experienced readers of Kant. Th ere are many high- quality commentaries on Kant’s Critique of Pure Reason currently available in English, some of which are listed in the Bibliography, so that one has to feel some trepidation in off ering a new one. In my experience of teaching and writing on the Critique over the past twenty- fi ve years, however, it is remarkable how many students, lecturers and professors continue to express the desire for a comparatively short and introductory but non-s uperfi cial explanation of Kant’s fundamental concep- tions and interconnected strategies of argumentation in the Critique. I have also been encouraged in this work by many students, colleagues and fellow Kant scholars, and for their encouragement I am especially grateful. I hope this book will be of some small help in guiding at least some readers to a ix