A Program in Miracles and the Power of Love One critical determine who played a critical role in the dissemination of A Class in Miracles is Marianne Williamson, a well-known author and religious teacher. Her meaning and popularization of the Course's concepts have led to its reach and impact. Williamson's books, lectures, and political actions have produced the Course's meaning to a broader audience.A Program in Miracles has also had a...