Book excerpt: First published in 1987. John Dee was Renaissance England's first Hermetic magus, a philosopher magician. He was also a respected practical scientist, an immensely learned man who investigated all areas of knowledge. In this fine biography, Peter French shows that not only magic and science, but geography, antiquarianism, theology and the fine arts were fields in which Dee was deeply involved. Through his teaching, writing and friendships with many of the most important figures of the age, Dee was at the centre of great affairs and had a profound influence on major developments in sixteenth-century England. Peter French places this extraordinary individual within his proper historical context, describing the whole world of Renaissance science, Platonism and Hermetic magic.