Alexander R. Pruss is Professor of Philosophy at Baylor University, working in metaphysics, philosophy of religion, formal epistemology, philosophy of mathematics, and applied ethics. His previous books include One Body (Notre Dame 2012), Actuality, Possibility and Worlds (Continuum 2011), and The Principle of Sufficient Reason (Cambridge 2006). He holds Ph.D.s in both philosophy and mathematics.
Joshua L. Rasmussen is a research professor of philosophy at Azusa Pacific University. He specializes in analytic metaphysics, with interests in mind and philosophy of religion. He is the author of Defending the Correspondence Theory of Truth (Cambridge 2014) and the founder of Worldview Design, which helps people use reason to address the big question of life.