Thich Nhat Hanh is the founder of the School of Youth Social Service, a relief organization that rebuilt bombed villages, set up schools and medical centers, resettled homeless families, and organized agricultural cooperatives after the Vietnam War. He was nominated for the 1967 Nobel Peace Prize. Joanna Macy is a scholar of Buddhism, deep ecology, and general systems theory. She lives in Berkeley, California. Wendell Berry isa conservationist, farmer, essayist, novelist, and poet. He is a former professor of English at the University of Kentucky and a past fellow of both the Guggenheim Foundation and the Rockefeller Foundation. He lives in Port Royal, Kentucky. Sandra Ingerman is a licensed marriage and family therapist (LMFT), and professional mental health counselor.

She was awarded the Peace Award from the Global Foundation for Integrative Medicine in 2007. She lives in Santa Fe, New Mexico. Richard Rohr is a Franciscan priest and founder of the Center for Action and Contemplation. He lives in Albuquerque, New Mexico. Bill Plotkin is a depth psychologist, wilderness rites guide, and ecotherapist. He lives in Durango, Colorado. Mary Evelyn Tucker is a senior lecturer and research scholar at Yale University where she holds appointments in the Divinity School and in the School of Forestry and Environmental Studies. She lives in New Haven, Connecticut.

Brian Swimme is the director of the Center for the Story of the Universe and a professor at the California Institute of Integral Studies. He lives in San Francisco. Vandana Shiva is an environmental leader, and recipient of the 1993 Alternative Nobel Peace Prize. Llewellyn Vaughan-Lee is a Sufi teacher who has lectured extensively throughout the United States, Canada, and Europe. He is the founder of the Golden Sufi Center and is the author of more than 15 books, including Alchemy of Light , Return of the Feminine and the World Soul , and Spiritual Power . He lives in Inverness, California.