Pauli thanks for Yank's and Feldman's paper. He writes about Glauber's calculations.

Pauli writes about Glauber's quotation.

Pauli thanks Weyl for his book on the philosophy of mathematics and natural science. He makes two critical remarks: 1) It is not correct to connect Leibniz with the principle of exclusion. 2) There is no asymmetry of the past-future relation in spontaneous radiation processes, but the concept of spontaneity needs a better definition.

Pauli comments on a letter to Schwinger. He accepts his results, but rejects some of his proofs and arguments.

Pauli makes more remarks about Schwinger's theory.

Pauli asks if Walden has more information on his claim that Mendeleev discovered the periodic table through dreams.

Pauli replies to Weizsäcker's letter. He comments on Plato and neoplatonism. He writes about the problem of unity of being in alchemy. He suggests showing this letter to Heisenberg.

Pauli writes about CERN's project. He comments on papers on the "casual interpretation" of quantum mechanics, particularly by Bohm.

Pauli writes about his trip to Princeton. He makes remarks on H-theorem and quantum statistics.