Pauli reports on further developments of the theory of mesons with strong coupling.

Pauli writes of his visit to California and of the calculations he made there. He suggests that Fierz could write a second part of his paper on the scattering of charged mesons.

Pauli asks questions about the unitary representations of the Lorentz group.

In this letter, Pauli gives further remarks on the spin-electron in a magnetic field. He also writes on the relation of physics to psychology.

In this letter Pauli writes on the role of the unconscious in the unity of the individuum. He adds Bohr's view on this problem.

Pauli writes on Schwinger's impending visit to Zürich.

Pauli writes about the talk he had with the German physicist M. Knoll on extra sensory perception (ESP), on different classes of synchronistic phenomena, spontaneous and induced events and on the analogy of a discovery of a law of nature and the induced synchronicity.

Pauli makes more comments on a paper written by Heisenberg.

Pauli writes on a talk he had with Bargmann on group theoretical problems.

Pauli writes on the limitations of the general theory of relativity, on the concept of space in the Renaissance, on the concepts of the neoplatonic world-soul and its replacement by mathematics and measurement in the 17th century, on the modified return of these neoplatonic ideas in quantum theory and on the need for a new conception and a new terminology, as e.g. "automorphism".