Erin Lothes Biviano received her doctorate in systematic theology from Fordham University. She holds a master’s degree in theology from Boston College and a bachelor’s degree in English literature from Princeton University. Erin is an Earth Institute Fellow with the Center for the Study of Science and Religion at Columbia University, where she is researching a book on religious responses to the environmental crisis. She lives in New York City with her husband and their son.

Eugene Fisher is the Associate Director of the U. S. Conference of Catholic Bishops' Secretariat for Ecumenical and Interreligious Affairs and the author of numerous books and scholarly articles on the subject. Rabbi Leon Klenicki was the Anti-Defamation League's Director of Interfaith Affairs and Co-Liaison to the Vatican.

Evelyn Eaton Whitehead is a developmental psychologist. She holds the doctorate from the University of Chicago. Her professional work focuses on issues of adult maturity, the dynamics of leadership, and the social analysis of community life.

Evelyn Underhill, a poet novelist, and well-known writer on mysticism was born in 1875. Educated at Kind’s College for Women, London, where she was later elected a Fellow, she was the author of over thirty books.

Falk van Gaver is a journalist, essayist and writer traveller. A graduate of the Institute of Political Studies in Paris, he spent two years living in Taybeh tow work on this book.