He visited Freud (who had cited his uncle Otto's work on Neurasthenia) in 1907 alongside Jung, approvingly noting his host's "distaste for all formality and etiquette, his personal charm, his simplicity, casual openness and goodness".
Han besøgte Freud (som havde citeret hans onkel Ottos arbejde om neurastheni i 1907) sammen med Jung der især bemærkede sin værts "afsky for al formalitet og etikette, hans personlige charme, hans enkelhed, afslappede åbenhed og godhed".