In these marginalia one sees a man (who famously seemed never to listen to anyone, for whom "conversation" was little more than a torrent of monologues) reading passages, reflecting on them, and responding with penciled dashes, dots, question marks, exclamation points, and underscoringsintellectual footprints across the page. Here is one of history's most complex figures reduced merely to a reader with a book and a pencil.