As the first translator of Plato's complete works into Latin, the Florentine writer Marsilio Ficino (1433-99) and his blend of Neoplatonic and Hermetic philosophy were fundamental to the intellectual atmosphere of the Renaissance. In Spain, his works were regularly read, quoted, and referenced, at least until the nineteenth century, when literary critics and philosophers wrote him out of the history of early modern Spain. In Ficino in Spain,...