In this fascinating new study Martin Kemp illuminates the most fundamental aspect of Leonardo"s work - how he thought visually. The pages of his notebooks teem with ideas and are unparalleled in the graphic work of any other thinker from any age. They deal with mighty inventions, great visions of the earth in age-long transformation, the mysterious governance of mathematical proportion in the design of the universe, the most detailed observations and theories of the motion of waters, meticulous reconstructions of the operation of heart valves and other elements of the human body, with the arts of peace and the science of war. They provide an unrivalled insight into the working of his creative mind. Extraordinary images from a wide variety of sources, some virtually unknown, will be illuminated by large-scale models, most notably his flying machine and giant crossbow, and by sequences of frames from highly innovative computer graphics designed to animate his thoughts. The images...