Peter Selg studied medicine in Witten-Herdecke, Zurich, and Berlin and, until 2000, worked as the head physician of the juvenile psychiatry department of Herdecke Hospital in Germany. Dr. Selg is director of the Ita Wegman Institute for Basic Research into Anthroposophy (Arlesheim, Switzerland), professor of medicine at the Alanus University of Arts and Social Sciences (Germany), and co-leader of the General Anthroposophical Section at the Goetheanum. He is the author of numerous books on Rudolf Steiner, anthroposophy, medical ethics, and the development of culture and consciousness. Jeff Martin is a translator from the U.S. He studied anthroposophy at Emerson College, England, and worked as a business analyst and consultant across Europe. Now retired, he has translated several books, including Becoming Fully Human: The Significance of Anthroposophy in Comtemporary Spiritual Life (CW 82) by Rudolf Steiner and several works by Peter Selg. He lives in France.