Aczel catapults the reader into a world where burgeoning intellect was cloaked in intrigue. <i>The Washington Post Book World</i> Aczel joins the ranks of Roger Penrose, Stephen Pinker, Francis Crick, and others. Keith Devlin, author of <i>Goodbye, Descartes: The End of Logic and the Search for a New Cosmology of the Mind</i> Splendid . . . first-rate. <i>Publishers Weekly</i> (starred review) Aczel reveals the mystery behind . . . one of the Western world s greatest minds . . . [<i>Descartes s Secret Notebook</i>] reads like a mystery novel as well as a biography. <i>Science News</i>