Pauli writes about E. J. Dijksterhuis' book "Die Mechanisierung des Weltbildes". He comments on Dijksterhuis' understanding of Newton, Galileo, Kepler, Mach, Einstein, etc, and on the concept of hazard, the relationship between science and religion, etc.

Pauli mentions Kröner's illness, two long letters from Pauli to Kröner concerning Galileo and Nicholas of Cusa, and a lecture by Pauli on the neutrino.

Pauli discusses metaphysics, positivism, science and ethics, etc.

Pauli formulates propositions on positivism, determinism, neo-Darwinism, etc.

Concerns biology, evolution, and concepts relating to wholeness, and to the observer.

Pauli discusses, among other things, Schopenhauer, Greek and Buddhist philosoph, and the oppositions phenomenism-realism, consciousness-existence, observer-observed object, etc.

Pauli encloses a copy of the manuscript of his lecture in Mainz, and asks for comments.