Quantum electrodynamics, renormalization.

Article by Pauli. Wave mechanics, Dirac's theory, spinor fields, Lorentz groups.

Scalar photons.

Calculations on Heisenberg's operators and their renormalization.

Manuscript, resolution of integrals.

Reflection on the theory of scientific knowledge. C. G. Jung. Preparation for the 3rd Zurich talks.

Reflection on "Theory and Experience". Preparation for the 3rd Zurich talks.

Reflection on "Theory and Experience". Preparation for the 3rd Zurich talks.

Reflection on theory and experiment, linked with Kant's theory of knowledge. Preparation for the 3rd Zurich talks.

Reflection on theory and experiment. Preparation for the 3rd Zurich talks.