An Introduction to Carl Friedrich von Weizsäcker’s Program for a Reconstruction of Quantum Theory

In spite of his familiarity with quantum theory, which he successfully applied to the properties and processes of nuclei and stars, Carl Friedrich von Weizsacker remained dissatisfied with the theory as it is commonly presented and understood. For him neither the closed mathematical framework nor the power of numerical calculation could become a substitute for inquiring into the understanding of quantum theory. Weizsacker’s dissatisfaction is even more remarkable when we recall his close professional relation and friendship with one of the founders of quantum theory, Werner Heisenberg.