When artist Harlan Carl Scheffler's wife Barbara developed Alzheimer's disease, he determined to learn as much as possible about the condition and to understand what was happening to his life-long partner. A Baha'i since childhood, he turned to religion as well as to science to provide insights into this physical disease of the brain. His conviction that there is a spiritual principle at work as well as a physical one is based on his study of the Baha'i texts, and particularly the talks of Abdu'l-Baha in which He describes the spiritual reality of what appears to be a wholly physical world....