Pauli writes about an error in a manuscript by Heisenberg. He comments on discussions with Pais.

Pauli makes further remarks about the H-theorem.

Pauli writes more about form-factors. The analogon of the arbitrary cut between observed system and means of observation in field theory has yet to be found. Pauli thinks of some group-theoretical formulation by which the same physical object is either seen as source of the field or as produced field. He talks on ideas about the origin of life and its connection with the realization of low probabilities.

Pauli replies to Göhring's letter of the 6 May 1954. He suggests "Science and Western Thought" as title for his lecture. He explains his meaning of "western".

Pauli worries about the eigenvalue problem.

Heisenberg writes about his new results about the nature of the $\Pi$-meson. He writes about the reformulation of their preprint.