Since the sixteenth century, historians have credited Masaccio—along with Filippo Brunelleschi and Donatello—with changing the course of Western art. Indeed, Masaccio’s legacy is endlessly fascinating yet highly problematic. A medieval artist at the threshold of the Renaissance, he produced works both extraordinarily innovative and exceptionally traditional. The Cambridge Companion to Masaccio, with ten essays by eminent scholars and conservators, confronts this legacy head-on, making a sophisticated and substantial contribution to the field. The Companion, writes...