Pauli sends more remarks about "psychophysics" with references to the ideas of Scotus Erigena, and to a text of the 17th century mentioned in Jung's "Psychology and alchemy". He also writes on the relations between alchemy and Platonism and on Newton's concept of space.

Pauli thanks Wightman for his letter of the 6th January 1955 which settles all important mathematical questions.

Pauli writes about Glauber's quotation.