Book excerpt: How were the relations among image, imagination and cognition characterized in the period 1500 – 1800? The authors of this volume argue that in those three centuries, a thoroughgoing transformation affected the following issues: (i) what it meant to understand phenomena in the natural world (cognition); (ii) how such phenomena were visualized or pictured (images, including novel types of diagrams, structural models, maps, etc.); and (iii) what role was attributed to the faculty of the imagination (psychology, creativity). The essays collected in this volume examine the new conceptions that were advanced and the novel ways of comprehending and expressing the relations among image, imagination, and cognition. They also shed light, from a variety of perspectives, on the elusive nexus of conceptions and practices.