Pauli comments on an essay by Erich Neumann in the Eranos-Yearbook of 1948.

Pauli returns to a problem discussed at the Florence conference concerning irreversibility and the H-theorem.

Pauli confirms that there will be a physics meeting in Basel in September. Schwinger, Rabi, Fermi, Cockcroft, Dyson and others have promised to come. Pauli is going to Princeton in November, but he will be back in May 1950. He gives some comments on his own latest work.

In this letter, Pauli gives further remarks on Weyl's parallel between Leibniz's principle and the exclusion principle. He also writes on Jung's synchronicity and its relation to causal events. It's said that the "elimination of all uncontrolable factors necessarily leads to destruction of the significance of synchronicity".

Comments on Bohr and Rosenfeld's article 'Field and charge measurements in quantum electrodynamics'.

Pauli writes about the death of H Bradt in New York.

Pauli comments on a paper by Fierz. He makes comments on a book recommended to him by Fierz and he also writes on the imaginary antagonism between nations.

Pauli sends his congratulations on Bohr's birthday on the 7th October and this gives him the opportunity to write to Bohr again. He writes about epistemological questions.

This letter is Pauli's reply to Dyson's explanation on renormalization.

Pauli writes about his visit to Sweden