Pauli writes about a letter by W Scherrer asking for recommendation of a paper of his for publication in the Helvetica physica acta.

Heisenberg replies to Pauli's letter. He agrees with him as to the insufficiency of the concept of causality for the explanation of evolution. He also expresses doubts as to whether Pauli's concept of "sinnoller Zufall" can lead to a better biological evolution. The second part of the letter deals with Heisenberg's ideas about a quantized field theory.

Pauli writes that the origins of $\varepsilon

The items in this file are mostly concerned with Institute matters and current research problems. The following topics are also discussed in certain letters: parity violation (1957-03-12 and 1957-03-20), Heisenberg's exaggerated propaganda his new theory of elementary particles (1958-03-04), a copy of a letter to Landau from Moscow (1958-03-11) and a circular letter explaining why Pauli withdrew his participation in Heisenberg's publication (see also landau_0339), further comments from Pauli on this to Enz (1958-14-03).

Heisenberg writes in clarification of an error in his calculation concerning the operator xa (xx').

Pauli writes about Jordan's request to send Thellung a lecture by Pauli on problems of the theory of relativity. He writes about Feynman's paper and about Watson's paper.

Heisenberg replies to Pauli's letter and detailed discussion of Källén's arguments concerning Heisenberg's quantum field theory.

Pauli writes further about biology. He believes, like Bohr, in a logical possibility of biological laws, which aren't contained in today's quantum physics.

Pauli compares some of Yang's equations with his own results.