W. Pauli mentions discussions in Altdorf about biology, evolution, etc.

Pauli comments on Weizsäcker's article on Goethe's science. He writes about Goethe and alchemy, and he writes about intuitive type and mental type, and about mind, matter and psyche.

Pauli replies to Weizsäcker's letter. He comments on Plato and neoplatonism. He writes about the problem of unity of being in alchemy. He suggests showing this letter to Heisenberg.

Pauli replies to Weizsäcker's letter about complementarity. He gives his explanation of Bohr's conception.

Pauli asks if Walden has more information on his claim that Mendeleev discovered the periodic table through dreams.

Pauli writes about his invitation to Ann Arbor. He is occupied with the divergence problem in the positron theory. He speaks of the damage war physics is causing to experimental physics. Weisskopf is invited to Princeton. (With some additional remarks for Mrs Weisskopf.)

Pauli writes about his contribution to the Bohr Festschrift. He writes about strong and weak reflection, particle and anti-particle conjugation and about biological evolution. He criticises Schwinger's work.

Pauli is excited about the experimental confirmation of parity violation.

Pauli writes about Landau's paper on My-meson decay and about a note by Salam.

Pauli writes about his work with Heisenberg.