The letter contains remarks on a method by Feynman and its application to Misner's idea.

Request from Pauli for offprint and notes concerning relativity.

Pauli's remarks on a preliminary paper by Misner on a Hamiltonian principle for quantized covariant field theory. misner_0399-4. For a better quality image of the appendix, see misner_0399-4.

Pauli emphazises the necessity for publishing contributions of eminent statisticions to the problem of the application of statistics to ESP.

Pauli refers to his article in the anniversary volume for de Broglie as regards his criticism of Bohm's renewal of the old theory of pilot waves.

About the English translation of W. Pauli's essay 'Der Einfluss archetypischer Vorstellungen auf die Bildung Naturwissenschaftlicher Theorien bei Kepler'. W. Pauli informs that E. Panofsky has recommended D. Sachs as translator.

Pauli thanks them for the received papers. The letter gives an account of Thirring's cut-off method and its preliminary results in the case of a scalar field interacting with a fermion field. Pauli believes that a good new theory is only possible on the basis of entirely new physical ideas. In connection with that, he is impressed by a remark by Landau on a connection of a cut-off moment of quantum electrodynamics with gravitational interaction.