Mark Alfano is Associate Professor of Philosophy at Macquarie University. In 2019, he published Nietzsche's Moral Psychology (Cambridge UP). His papers have won awards from the Philosopher's Annual (2018) and Peritia (2019).

Colin Klein is Professor of Philosophy at the Australian National University. He is the author of What the Body Commands: The Imperative Theory of Pain (MIT Press, 2015).

Jeroen de Ridder is Associate Professor of Philosophy at Vrije Universiteit Amsterdam and Professor by special appointment of Christian Philosophy at the University of Groningen. His research is in social and political epistemology, and in 2021 he co-edited The Routledge Handbook of Political Epistemology.