Description:The late Gregor Sebba was fond of describing his monumental Bibliographia Cartesiana: A Critical Guide to the Descartes Literature, 1800–1960 as a by-product of his research begun in 1949 for an article he had in mind titled The Dream of Descartes. The bibliography has been indispensable to Descartes scholars since its appearance in 1964. When Sebba died in 1985, his manuscript for The Dream of Descartes was still unfinished. Here, with materials provided by An?bal A. Bue?o, Richard H. Popkin, and Helen Sebba, Richard A. Watson presents the completed work based on a 1973 draft, letters, outlines, and other manuscript material. The result is a fascinating analysis of Descartes’ dreams as seminal in the creative process of genius.