- 2017 - Talking About Death
- 2016 - The Art of Peace
- 2015 - St. Francis of Assisi: Pacifist, Ecumenist, Arabist
- 2014 - Radical Hospitality
- 2013 - Why Work?
- 2012 - Heroes
- 2011 - Money, Wealth, and the Common Good
- 2010 - The Nuclear Threat
- 2009 - The Good Earth
- 2008 - Friendship
- 2007 - Immigrants and Refugees
- 2006 - Forgiveness
- 2005 - Poverty and Children
- 2004 - Who Owns Nature?
- 2003 - Through the Looking Glass
- 2002 - Gathering of Waters
- 2001 - The Sporting Life