Rudolf Steiner, the often undervalued, multifaceted genius of modern times, contributed much to the regeneration of culture. In addition to his philosophical teachings, he provided ideas for the development of many practical activities including education--both general and special--agriculture, medicine, economics, architecture, science, religion, and the arts. Today there are thousands of schools, clinics, farms, and many other organizations based on his ideas.

Steiner's original contribution to human knowledge was based on his ability to conduct spiritual research, the investigation of...