Daniel C. Dennett is the Co-Director of the Center for Cognitive Studies, University Professor, and Austin B. Fletcher Professor of Philosophy at Tufts University. He is the author of
Breaking the Spell: Religion as a Natural Phenomenon (2006) and
Freedom Evolves (2003).
Alvin Plantinga is John A. O'Brien Professor of Philosophy at the University of Notre Dame. He is the author of
Essays in the Metaphysics of Modality (OUP, 2003) and
Warranted Christian Belief (OUP, 2000).