Steiner's original contribution to human knowledge was based on his ability to conduct spiritual research, the investigation of metaphysical dimensions of existence. With his scientific and philosophical training, he brought a new systematic discipline to the field, allowing for conscious methods and comprehensive results. A natural seer from childhood, he cultivated his spiritual vision to a high degree, enabling him to speak with authority on previously veiled mysteries of life.

Topics include: true human nature as a basis for medical practice; the science of knowing; the mission of reverence; the four temperaments; the bridge between universal spirituality and the physical; the constellation of the supersensible bodies; the invisible human within us: the pathology underlying therapy; cancer and mistletoe, and aspects of psychiatry; case history questions: diagnosis and therapy; anthroposophic medicine in practice: and three case histories.