In a free society, it is common to hear the request that one ‘keep an open mind.’ Just what exactly is it, however, to keep an open-mind? How does open-mindedness function? How does it square with important personal commitments? These issues are particularly acute when it comes to matters of religious belief in which open-mindedness can sound to the pious a bit too much like doubt. Certainly, in a discipline whose discourse remains rational dialogue, effort should be spent discerning the contours of this virtue, especially in light of its formal role in establishing responsiveness to new inquiries in matters philosophical and religious. This book provides a collection of essays serving to promote conversation about open-mindedness, its virtue (or lack thereof), and its role and application in problems in the philosophy of religion in particular.