This collection of Stephen Clucas's articles addresses the complex interactions between religion, natural philosophy and magic in sixteenth- and seventeenth-century Europe. The essays on the Elizabethan mathematician and magus John Dee show that the angelic conversations of John Dee owed a significant debt to medieval magical traditions and how Dee's attempts to communicate with spirits were used to serve specific religious agendas in the mid-seventeenth century. The essays devoted to Giordano Bruno offer a reappraisal of the magical orientation of the Italian philosopher's mnemotechnical and...