Marianne Deborah Williamson (born July 8, 1952) is an American spiritual teacher, author, and lecturer. She has published twelve books, including four New York Times number one bestsellers. She is the founder of Project Angel Food, a meals-on-wheels program that serves homebound people with AIDS in the Los Angeles area, and the co-founder of The Peace Alliance, a grassroots campaign supporting legislation to establish a United States Department of Peace. Williamson serves on the Board of Directors of the RESULTS organization, which works to end poverty in the United States and around the world. Williamson also produces the Sister Giant Conferences, highlighting the intersection of spirituality and politics.