Matthew Stanford is CEO of the Hope and Healing Center and Institute in Houston and an expert on mental illness and the church. He is the author of Grace for the Afflicted: A Clinical and Biblical Perspective on Mental Illness. He has studied how seminaries prepare students to address mental illness within faith communities.

Nancy Kehoe is a psychologist and a Catholic nun in Belmont, Mass. She is the author of Wrestling With Our Inner Angels: Faith, Mental Illness and the Journey to Wholeness. 

James Davies is a  senior lecturer in social anthropology and psychotherapy at Roehampton University in London and a  psychotherapist. He wrote an article in the winter/spring 2011 edition of the Harvard Divinity Bulletin, “The Rationalization of Suffering,” about the role of suffering and faith in therapy.  

Kai Nielsen is an adjunct professor of philosophy at Concordia University in Montreal. He is a noted atheist and has written multiple books on atheism. He signed the Humanist Manifesto II in 1973.

Suzanne Rutland is an emeritus professor of Hebrew, biblical and Jewish studies at the University of Sydney. She is the author of a comprehensive history on Australian Jewry, Edge of the Diaspora: Two Centuries of Jewish Settlement in Australia.

Ian Young is chair of the department of Hebrew, biblical and Jewish studies at the University of Sydney. His research and teaching interests focus on the language and interpretation of the Hebrew Bible.

Avril Alba is a professor in the deparment of Hebrew, Biblical and Jewish studies at the University of Sydney. Her research focuses on the Holocaust, including post-Holocaust Jewish theology. She wrote the article “Testifying to the Holocaust” for the Australian Jewish Historical Society Journal.

Philip Pullman is an author and noted atheist. His books include the His Dark Materials trilogy and Jesus, The Good Man Jesus and the Scoundrel Christ. Contact through his agent Caradoc King.

Uto Meier is a professor of religious education at Katholische Universitat Eichstätt-Ingolstadt in Germany. His research focuses on Catholic religious education.