Ken Parry is Honorary Senior Research Fellow in the Department of History and Archaeology at Macquarie University, Sydney, Australia. He is the author of Depicting the Word: Byzantine Iconophile Thought of the Eighth and Ninth Centuries (1996), editor of several books including The Wiley Blackwell Companion to Patristics (2015), and founding editor (2012) of the Texts and Studies in Eastern Christianity series.

Dean Rickles is Professor of History and Philosophy of Modern Physics and a co-director of The Centre for Time at the University of Sydney, Australia. He is editor of The Routledge Series on Philosophy of Physics and Mathematics and author of many books, including Life is Short: An Appropriately Brief Guide to Making it More Meaningful (2022), Dual-Aspect Monism and the Deep Structure of Meaning (co-authored with Harald Atmanspacher, 2022), and Covered with Deep Mist: The Development of Quantum Gravity (2020).