Pauli thinks that classical field theories cannot contribute to a real solution of the problems which Landé has dealt with.

Pauli asks a question concerning indefinite metric.

Pauli writes about his common work with Heisenberg and the difficulties involved. He talks about a paper by Bogoljubow on supraconductivity of which Wentzel thinks highly.

Pauli comments on Schafroth's preprint. He hopes that with Bogoljubow's and Wentzel's work one can arrive at a possible model for supraconductivity.

Pauli writes about the eigenvalue problem in formal systems without given Hamiltonian and interchange relations (Vertauschungsrelationen), on which, to his opinion, the future of the spinormodel depends.

Pauli asks questions about the possibility of eliminating the concept of Lagrangian and the corresponding field equations from the formalism of quantized fields. He also writes about corresponding invariants.

Pauli writes about the hopeless state of quantum field theory at present. He writes about Heisenberg's ideas. He comments on a preprint by Gürsey on the group structure of elementary particles.

About H. Thirring's 70th birthday, H. Thirring's son, Pauli and H. Thirring's departure from Austria.

Pauli writes of his work with Gürsey. He writes about Glaser's idea to introduce indefinite metric into the Uhlenbeck-Pais's models.

Pauli writes about his plans for the near future. He critizes the possibility of deriving particles with half-integer regular spin and integer isotopin from a spinor-field.