Pauli thanks him for the copy of the work "Relativistic wave equations for the protons" and gives some criticisms.

Pauli supports Pais' application to come to Princeton. He is favourably impressed by Pais' work.

Pauli writes of the preparations for his trip to Europe and of Schein's artificial meson production reported at the New York meeting.

Pauli comments on Gustafson's paper which contains an alternative method to the Lambda-limiting process.

Pauli gives hi views and asks questions on meson interactions in connection with a paper by Matthews.

Pauli writes about the degrees of simplicity of field quantization theories of Heisenberg, Schwinger and Feynman-Dyson. He is interested, at present, in which interactions become convergent after renormalization and which do not. He speaks of results obtained by Matthews (Cambridge) for certain meson theories.

Pauli talks about his interest in the question for which interactions the Schwinger-Dyson formalism of renormalization leads to a succesful result. He comments on Kronig's story of his dream about Ehrenfest's sermon on love. He thinks that the roots of feeling are as deep as those of thought. He says that love is a force of nature. He says that in the period of the renaissance there was not yet a separation between cognition and inner experience, and at that time love was the most important subject of philosophy (e.g. Ficino and Pico de la Mirandola and Leone Ebreo).

Pauli answers a question asked by Dyson on the comparison of the Bohr-Rosenfeld analysis with the mathematical results of quantum electrodynamics for normalized field commutators.

Pauli reports on the congress in Rochester. He writes about his discussion with Fermi about the neutrino experiments. He writes also on a talk about a new paper by Feynman.