C.G. Jung Letters, Volume 1 (Bollingen, Band 1) Adler, Gerhard; Jaffe, Aniela and Jung, C. G.

Over many years Jung had frequently used the medium of letters to communicate his ideas to the outside world and to rectify misinterpretations about which he felt sufficiently strong, quite apart from answering people who approached him with genuine problems of their own and corresponding with friends and professional colleagues. In this way many of his letters contained new creative ideas and a running commentary on his work.