That Power which brought the body into existence originally maintains its involuntary functions, cures its diseases, and heals its wounds. It is within the body itself; it is the life-force aspect of the Soul, the Overself. Its curative virtue may express itself through various mediums--as herbs and foods, hot, cold, or mud baths, and deep breathings, exercise, and osteopathy--or it may express itself by their complete absence as in fasting, often the quickest and most effective medium. Or, disdaining physical methods entirely, it may act directly and almost miraculously as spiritual healing.
-- Notebooks Category 10: Healing of the Self > Chapter 2: The Universal Life Force > # 2
-- Perspectives > Chapter 10: Healing of the Self > # 36