The title is misleading, and the blurb doesn't provide much accurate information either. This book is neither a treatise on the ancient and medieval systems of memory, nor a biography, but a meandering series of snapshots of Matteo Ricci, whose life in China at the end of the 16th century was fascinating (or might have been in the hands of a different author). The extracts from his letters are vivid and exciting and provide flashes of insight into Chinese customs and the perils of travel by land and sea, but Spence's own writing is loosely organised and somewhat tedious.