This book focuses on how, for Berkeley, mind is related to its ideas. It does not assume that thinkers like Descartes, Malebranche, or Locke define for Berkeley the context in which he develops his own thought. Instead, it indicates how he draws on a tradition that informed his early training and that challenges much of the early modern thought with which he is often associated. Specifically, this book indicates how Berkeley’s distinctive treatment of mind (as the activity whereby objects are differentiated and related to one another) highlights how mind neither precedes the existence of objects nor exists independently of them. This distinctive way of understanding the relation of mind and objects allows Berkeley to appropriate ideas from his contemporaries in ways that so transform the issues with which he is engaged that his insights—for example, about how God creates the minds that perceive objects—are only now starting to be fully appreciated.