Anthony Grafton is Henry Putnam University Professor of History at Princeton University. His current project is a large-scale study of the science of chronology in 16th- and 17th-century Europe. He is the author of, among other books, Magic and Technology in Early Modern Europe (Smithsonian Institution Libraries, 2005), Bring Out Your Dead: The Past as Revelation (Harvard University Press, 2001), Cardano's Cosmos: The Worlds and Works of a Renaissance Astrologer (Harvard University Press, 1999) and Defenders of the Text: The Traditions of Scholarship in an Age of Science, 1450-1800.