developed an ontological theory that has been dubbed the "Pauli–Jung Conjecture" and has been seen a kind of dual-aspect theory. The theory holds that there is "a psychophysically neutral reality" and that mental and physical aspects are derivative of this reality. Pauli thought that elements of quantum physics pointed to a deeper reality that might explain the mind/matter gap and wrote, "we must postulate a cosmic order of nature beyond our control to which both the outward material objects and the inward images are subject." Pauli and Jung held that this reality was governed by common principles ("archetypes") that appear as psychological phenomena or as physical events. They also held that synchronicities might reveal some of this underlying reality's workings. Beliefs He is considered to have been a deist and a mystic. In No Time to Be Brief: A Scientific Biography of Wolfgang Pauli he is quoted as writing to science historian Shmuel Sambursky, "In opposition to the monotheist religions – but in unison with the mysticism of all peoples, including the Jewish mysticism – I believe that the ultimate reality is not personal." Personal life In 1929, Pauli married Käthe Margarethe Deppner, a cabaret dancer. The marriage was unhappy, ending in divorce after less than a year. He married again in 1934 to Franziska Bertram (1901–1987). They had no children. Death Pauli died of pancreatic cancer on December 15, 1958, at age 58. Bibliography References Further reading Remo, F. Roth: Return of the World Soul, Wolfgang Pauli, C.G. Jung and the Challenge of Psychophysical Reality [unus mundus], Part 1: The Battle of the Giants. Pari Publishing, 2011, . Remo, F. Roth: Return of the World Soul, Wolfgang Pauli, C.G. Jung and the Challenge of Psychophysical Reality [unus mundus], Part 2: A Psychophysical Theory. Pari Publishing, 2012, . External links Pauli bio at the University of St Andrews, Scotland Wolfgang Pauli bio at "Nobel Prize Winners" Wolfgang Pauli, Carl Jung and Marie-Louise von Franz Virtual walk-through exhibition of the life and times of Pauli Annotated bibliography for Wolfgang Pauli from the Alsos Digital Library for Nuclear Issues Pauli Archives at CERN Document Server Virtual exhibition at ETH-Bibliothek, Zurich Key Participants: Wolfgang Pauli – Linus Pauling and the Nature of the Chemical Bond: A Documentary History Pauli's letter (December 1930), the hypothesis of the neutrino (online and analyzed, for English version click 'Télécharger') Pauli exclusion principle with Melvyn Bragg, Frank Close,