Graham Oppy, FAHA, is Professor of Philosophy at Monash University in Australia. His authored books include Arguing About Gods (2006), Philosophical Perspectives on Infinity (2006), The Best Argument Against God (2013), Describing Gods (2014), Reinventing Philosophy of Religion (2014), Naturalism and Religion (2018), Atheism and Agnosticism (2018), and Atheism: The Basics (2019).

Kenneth L. Pearce is Ussher Assistant Professor in Berkeley Studies at Trinity College Dublin. He has published extensively on philosophy of religion and the history of early modern philosophy, and was the winner of the 2016 Sanders Prize in Philosophy of Religion. He is the author of Language and the Structure of Berkeley's World (2017) and co-editor (with Tyron Goldschmidt) of Idealism: New Essays in Metaphysics (2017).

Helen De Cruz is Professor of Philosophy and the Danforth Chair in the Humanities at Saint Louis University, USA.