| Preface: The History of this Translation: Paul Rosbaud, Friend and Publisher of Wolfgang Pauli | 1 |
| Robert Schlapp (1899-1991) | 7 |
| Wolfgang Pauli (1900-1958): A Biographical Introduction | 13 |
| 1 | Matter | 27 |
| 2 | The Philosophical Significance of the Idea of Complementarity | 35 |
| 3 | Probability and Physics | 43 |
| 4 | Niels Bohr on His 60th Birthday | 49 |
| 5 | Sommerfeld's Contributions to Quantum Theory | 59 |
| 6 | Arnold Sommerfeld | 69 |
| 7 | Rydberg and the Periodic System of the Elements | 73 |
| 8 | Paul Ehrenfest | 79 |
| 9 | Einstein's Contribution to Quantum Theory | 85 |
| 10 | Space, Time and Causality in Modern Physics | 95 |
| 11 | The Theory of Relativity and Science | 107 |
| 12 | Impressions of Albert Einstein | 113 |
| 13 | Albert Einstein and the Development of Physics | 117 |
| 14 | Theory and Experiment | 125 |
| 15 | Phenomenon and Physical Reality | 127 |
| 16 | Science and Western Thought | 137 |
| 17 | Ideas of the Unconscious from the Standpoint of Natural Science and Epistemology | 149 |
| 18 | Exclusion Principle and Quantum Mechanics | 165 |
| 19 | The Violation of Reflection Symmetries in the Laws of Atomic Physics | 183 |
| 20 | On the Earlier and More Recent History of the Neutrino | 193 |
| 21 | The Influence of Archetypal Ideas on the Scientific Theories of Kepler | 219 |
| Name Index | 281 |