Arizona State University

Dr. Os Guinness is a writer, lecturer, and social scientist, with a D.Phil. from Oxford University.  He was a senior fellow of the Trinity Forum in the Washington D.C. area, where he currently resides as an independent speaker and author of 18 books. For an extended biography, please click here.

Vishal Mangalwadi is an international lecturer, social reformer, political columnist, and author of 13 books. Born and raised in India, he studied philosophy at universities, in Hindu ashrams, and at L’Abri Fellowship in Switzerland. For an extended biography, please click here.

Amy Orr-Ewing is Training Director of the Ravi Zacharias Trust in England.  With degrees in theology from Oxford and King’s College, London, she oversees the Trust’s apologetics training program and is a writer and speaker. For an extended biography, please click here.

Dr. Mary Poplin is a professor in the School of Educational Studies at Claremont Graduate University in Claremont, California, and was Dean of the School from 2000-2004.  She received her Ph.D. in Education from the University of Texas. For an extended biography, please click here.