Verrocchio was arguably the most important sculptor between Donatello and Michelangelo but he has seldom been treated as such in art historical literature because his achievements were quickly superseded by the artists who followed him. He was the master of Leonardo da Vinci, but he is remembered as the sulky teacher that his star pupil did not need. In this book, Christina Neilson argues that Verrocchio was one of the most experimental artists in fifteenth-century Florence, itself one of the most innovative centers of artistic production in Europe. Considering the different media in which the artist worked in dialogue with one another (sculpture, painting, and drawing), she offers an analysis of Verrocchio's unusual methods of manufacture. Neilson shows that, for Verrocchio, making was a form of knowledge and that techniques of making can be read as systems of knowledge. By studying Verrocchio's technical processes, she demonstrates how an artist's theoretical commitments can be uncovered, even in the absence of a written treatise.