Pauli writes on some points of discussion for the forthcoming meeting with Fierz in Basel.

Pauli writes about one of the letters he wrote to Weizsäcker (a copy is attached) concerning the "Bohr-exegis", especially on complementarity, and the "unification of opposites". In connection with this, Pauli explains the story of the Danish order of the elephant, which has been given to Bohr.

Pauli replies to Weizsäcker's letter about complementarity. He gives his explanation of Bohr's conception.

Pauli writes about a report from the USA by Jost that Bogoljubow has advanced more than anybody else in the mathematics of dispersion relations.

Pauli replies to Fierz's letter of the 17 October 1956. He gives further details concerning the discussion of beta-disintegration.

Pauli makes some additions to his previous letter and sends the calculations of certain terms describing the emission e-+ v+ or e+ + v-. An appendix refers to Pauli's paper in the Bohr-Festschrift.

Pauli suggests to make a joint colloquium talk on a paper by Ramsey on "Negative temperatures".

Pauli sends an additional remark about the paper by four Japanese, published in: Progress of theoretical physics: 6 (1951) on the possibiliy of avoiding indefinite metric in Hilbert-space in quantum electrodynamics.

Pauli continues to write about the paper written by four Japanese physicists published in: Progress of theoretical physics: 6 (1951) and on a book by Synge.

Pauli comments and questions in connection with Heisenberg's letter of 26 December which Pauli regards as a progress.