Professor Ingrid Riedel is a Jungian analyst with doctorates in theology and German studies. An honorary professor for the psychology of religion, she maintains a private psychotherapy practice in Constance, and is a lecturer and training analyst at the C.G. Jung Institutes in Zürich and in Stuttgart. She is the author of numerous books and articles in German.

Christa Henzler is a psychotherapist and Jungian analyst in private practice in Constance, a trainer for analytic and depth psychology-based psychotherapy and a lecturer, training analyst and supervisor at the C.G. Jung Institutes in Zürich and in Stuttgart.