Pauli replies to a letter of the 25 July 1954. He explains his critical attitude to ontology but he conceeds that ontology reflects an intrinsic need of man to overcome the tension between the "Internal" and the "External".

Jost is interested in Janner's problem. Pauli is going to lecture on it.

Pauli suggests a dissertation on H-theorem in quantum statistics and he summarizes Fierz latest work on it.

Pauli has returned from the USA and he plans to consider Janner's work.

Pauli takes an interest in Jauch's scientific development and hopes to find a position for him. He writes of his own work with Fierz. He hopes to succeed in getting rid of the spinor-calculus.

Pauli urges Jauch to take his final examination so that he could come to Zürich if Fierz goes to Basel.

Pauli discusses technicalities of Jauch's possible trip to Switzerland next spring. He writes of his own work on a theory of particles with arbitrary spin. He suggests that Jauch should study meson theory.

Pauli hopes that in spite of all the difficulties caused by the war, Jauch will accept the position as assistant in Zürich.

Pauli received an elaboration of Jauch's lecture.

Pauli requests a starting point for discussion on self induction.