Love, Death, Madness, and the Creation of Roget's Thesaurus

Who was Peter Mark Roget and what prompted him, from the age of eight, to begin the systematic organization of the English language that made him famous? We’ll talk with journalist Joshua Kendall, whose new book is “The Man Who Made Lists: Love, Death, Madness, and the Creation of Roget’s Thesaurus” (Putnam, 2008).