Rudolf Steiner (1861-1925) was born in the small village of Kraljevec, Austro-Hungarian Empire (now in Croatia), where he grew up. As a young man, he lived in Weimar and Berlin, where he became a well-published scientific, literary, and philosophical scholar, known especially for his work with Goethe's scientific writings. At the beginning of the twentieth century, he began to develop his early philosophical principles into an approach to systematic research into psychological and spiritual phenomena. Formally beginning his spiritual teaching career under the auspices of the Theosophical Society, Steiner came to use the term Anthroposophy (and spiritual science) for his philosophy, spiritual research, and findings. The influence of Steiner's multifaceted genius has led to innovative and holistic approaches in medicine, various therapies, philosophy, religious renewal, Waldorf education, education for special needs, threefold economics, biodynamic agriculture, Goethean science, architecture, and the arts of drama, speech, and eurythmy. In 1924, Rudolf Steiner founded the General Anthroposophical Society, which today has branches throughout the world. He died in Dornach, Switzerland. Stephen Keith Sagarin, Ph.D., is Faculty Chair, a cofounder, and a teacher at the Great Barrington Waldorf High School in western Massachusetts, where he teaches history and life science. He is also a former teacher and administrator at the Great Barrington Rudolf Steiner School and the Waldorf School of Garden City, New York, the high school from which he graduated. Dr. Sagarin writes, lectures, mentors teachers, and consults with Waldorf schools on teaching and administration. He is an associate professor and former director of the M.S. education program in Waldorf teacher education at Sunbridge Institute, New York. He is the former editor of the Research Bulletin of the Research Institute for Waldorf Education and has taught history of education at Teachers College, Columbia University, New York City; human development at the City University of New York; and U.S. and world history at Berkshire Community College, Massachusetts. Dr. Sagarin has a Ph.D. in history from the Graduate School of Arts and Sciences, Columbia University, and a bachelor's degree in art history, with a certificate of proficiency in fine art, from Princeton University. He is married and the father of two children, Andrew and Kathleen. His wife, Janis Martinson, is Chief Advancement Officer at Miss Hall's School in Pittsfield, Massachusetts.