'A lovely debut from a gifted young author. Violet Moller brings to life the ways in which knowledge reached us from antiquity to the present day in a book that is as delightful as it is readable.' Peter Frankopan, author of The Silk RoadsIn The Map of Knowledge Violet Moller traces the journey taken by the ideas of three of the greatest scientists of antiquity Euclid, Galen and Ptolemy through seven cities and over a thousand years. In it, we follow them from sixth-century Alexandria to ninth-century Baghdad, from Muslim Cordoba to Catholic Toledo, from Salernos medieval medical school to Palermo, capital of Sicilys vibrant mix of cultures, and finally to Venice, where that great merchant citys printing presses would enable Euclids geometry, Ptolemys system of the stars and Galens vast body of writings on medicine to spread even more widely. In tracing these fragile strands of knowledge from century to century, from east to west and north to south, Moller also reveals the web of connections between the Islamic world and Christendom, connections that would both preserve and transform astronomy, mathematics and medicine from the early Middle Ages to the Renaissance. Vividly told and with a dazzling cast of characters, The Map of Knowledge is an evocative, nuanced and vibrant account of our common intellectual heritage.'An endlessly fascinating book, rich in detail, capacious and humane in vision.' Stephen Greenblatt, author of The How the World Became Modern