Book excerpt: "Thoughtful Images: Philosophy Illustrated is the first systematic investigation of how artists throughout the ages have illustrated philosophical texts, ideas, concepts, and theories. The book begins by developing a theory of visual illustrations of philosophical texts and undermining what the author calls "the denigration of illustration." The book then takes a more historical approach, beginning in Ancient Greece and Rome and proceeding through Medieval illuminations and printed broadsides to the frontispieces of philosophical texts. Throughout, attention is paid to how technological developments enable different means for illustrating philosophy"--