Glen Pettigrove is Professor of Philosophy at the University of Glasgow. He is the editor - with Christine Swanton - of Neglected Virtues (2022) and the author of Forgiveness and Love (2012).

Robert Enright holds the Aristotelian Professorship in Forgiveness Science within the Department of Educational Psychology at the University of Wisconsin-Madison, is a licensed psychologist, and is co-founder of the International Forgiveness Institute. He is the author or editor of seven books including The Forgiving Life (2012), 8 Keys to Forgiveness (2015), Forgiveness Therapy (2015), and Forgiveness Is a Choice (2019).