2018
Dr. Justin Barrett - Spring Rev. Gretta Vosper - Summer
2017
Pastor Phillip Gulley - Spring Dr. Mark Muesse - Summer Sister Ilia Delio, OSF - Fall
2016
Rev. Michael Dowd - Spring imam Imed Enchassi - Summer Rev. Dr. John Phillip Newell - Fall
2015
Dr. Barbara Brown Taylor - Spring Dr. Kirby Godsey - Summer
Dr. Owen Flanagan - Fall
2014
Rabbi Rami Shapiro - Spring Rev. Fred Plumer - Summer Dr. Diana Butler Bass - Fall
2013
Dr. John Dominic Crossan - Spring Bishop John Shelby Spong - Fall
2012
Rev. Dr. Brian McClaren - Spring Rev. Dr. Cynthia Bourgeault - Fall
2011
Dr. Robin Myers - Spring Dr. Bart Ehrman - Fall
2010
Dr. Amy Jill Levine - Spring Dr. Marcus Borge - Fall
