Pauli comments on the meson theory with integer spin and strong coupling. He writes about Schwinger's approach to the problem. He writes about nuclear forces and about the competition between the nucleon's interaction energy and the energy of isobars. He writes about pair theory. He comments on a correspondence with Dirac about the elimination of divergences in quantum electrodynamics.

Pauli comments on papers by Wentzel and Fierz published in the Helv. Phys. Acta. He writes about the difficulties of all theories on nuclear forces. He writes about the anisotropy of neutron-proton scattering for higher energies, and its consequences for the theory. He comments on his paper on the Lambda-limiting process. He writes about Dirac's theory of photons with negative energy. He writes about the discovery of a new positive particle.

Pauli comments on the treatment of a certain integral. He writes about the structure of a future theory which will describe simultaneously all elementary particles and their masses.

Pauli writes about the failure to decide mathematically wether the renormalized and Lorentz-invariant quantization of electrodynamics constitutes a consistant theory. He writes about his visits to Hamburg and Copenhagen and to the relativity conference in Berne.

Pauli writes about the success of the hypothesis of the magnetic electron. He writes about the connection of Schrödinger's equation with quantum mechanics. He comments on the conclusions of Heitler's paper on statistics. He writes about the second order Stark effect.

Pauli replies to Wentzel's letter of the 2nd October 1942. He comments on Wentzel's calculations.

Pauli writes about the renormalization method which does not work so well for general interaction in quantized field theory as in the case of positron-quantum electrodynamics.

Pauli writes about the publicity given to Heisenberg in radio and press. He writes about the prospects and difficulties of his joint work with Heisenberg. He writes about his participation to the solid-state seminar in Kittel.

Pauli replies to Wentzel's letter which gives hope that Schafroth, Bardeen, Bogoljubow and Wentzel will find a model of supra-conductivity. He writes about the Max Planck medal.

Pauli writes about possible candidates for an assistantship in his institute. He reports on the New York physics meeting.