Stephan van Erp is a Senior Researcher and Lecturer in Systematic Theology and Theory of Religion and Culture at the Faculties ofTheology and Religious Studies of the Radboud University Nijmegen (the Netherlands). His main publications include "The Art of God: Hans Urs von Balthasar's Theological Aesthetics and the Foundations of Faith" (2004) and "Vrijheid in verdeeldheid: De geschiedenis van religieuze tolerantie" ("Freedom in Diversity: The History of Religious Tolerance") (2008).