Comprises 2 papers: Jung's 'Synchronicity: An Acausal Connecting Principle' & Pauli's 'The Influence of Archetypal Ideas on the Scientific Theories of Kepler'. At the beginning of 1931, shortly after his divorce & immediately following his postulation of the neutrino, Pauli had a severe breakdown. He consulted the psychiatric psychotherapist C.G. Jung who, like Pauli, lived near Zürich. Jung immediately began interpreting Pauli's deeply archetypal dreams, & Pauli became one of the depth psychologist’s best students. Soon, he began to criticize the epistemology of Jung’s theory scientifically. This contributed to a certain clarification of the latter’s thoughts, especially about the concept of synchronicity. A great deal of these discussions is documented in the Pauli/Jung letters, today published as Atom & Archetype. Jung's elaborate analysis of more than 400 of Pauli's dreams is documented in Psychology & Alchemy.