Jean-Baptiste Du Bos’ Critical Reflections on Poetry and Painting, first published in French in 1719, is one of the seminal works of modern aesthetics. Du Bos rejected the seventeenth-century view that works of art are assessed by reason. Instead, he believed, audience members have sentiments in response to artworks. Their sentiments are fainter versions of those they would feel in response to actually seeing what the work of art imitates. Du Bos was influenced by John Locke’s empiricism and, in turn, had a major impact on virtually every major eighteenth-century contributor to philosophy...