| Preface to the Paperback Edition | |
| Foreword | |
| Introduction | |
| I | General Views and Inquiries | 1 |
| II | Discussions on Unconsciousness | 21 |
| III | The Unconscious and Discovery | 29 |
| IV | The Preparation Stage. Logic and Chance | 43 |
| V | The Later Conscious Work | 56 |
| VI | Discovery as a Synthesis. The Help of Signs | 64 |
| VII | Different Kinds of Mathematical Minds | 100 |
| VIII | Paradoxical Cases of Intuition | 116 |
| IX | The General Direction of Research | 124 |
| Final Remarks | 133 |
| App. I | 137 |
| App. II | 142 |