Related to the key areas of Pauli's and Jung's joint interests, the book covers overlapping issues from the perspectives of physics, philosophy, and psychology. Of primary significance are epistemological questions connected to issues such as realism, measurement, observation, consciousness, and the unconscious.

Dr Harald Atmanspacher is at the Institute for Frontier Areas of Psychology at Freiburg, Germany. In addition he is a fellow at Collegium Helveticum (ETH Zurich) and a faculty member of the C.G. Jung Institute Zurich, Switzerland. Dr Christopher A. Fuchs is a member of the quantum foundations group at Perimeter Institute, Waterloo, Canada. Based on Pauli's notion of a participating observer, he explores new ideas for understanding measurement in physics.