Mara Sidoli (1937-2000) was president of the Jung Institute in Santa Fe, California, USA and director of the Institute for the Advancement of Analytical Psychology. She is the author of The Unfolding Self and the co-editor of Jungian Child Psychotherapy. Gustav Bovensiepen is the medical director of the Max Burger Clinic of Child and Adolescent Psychiatry in Berlin, Germany and a training analyst at the C. G. Jung Institute of Berlin. He has published widely in German and English.