Reprint from the Proceedings of the Rydberg centennial conference on atomic spectroscopy.

Quantum electrodynamics, renormalization, Schwinger.

G. Glimstedt informs W. Pauli that he has been elected as foreigne member of the royal society of physiography (Lund).

Pauli describes his role in preparation of the Bohr Festschrift. Pauli gives his views on biological questions.

Pauli makes a short remark about the equivalence of Fierz and Gelfant's results concerning the Lorentz group.