Mary Karr is the Jesse Truesdell Peck Professor of English Literature at Syracuse University. Her books include “The Liars’ Club,” “Lit,” and “Now Go Out There: (and Get Curious.)” Her celebrated guide, “The Art of Memoir,” is now in paperback. This interview is edited and produced with music and other features in the On Being episode “Mary Karr — Astonished by the Human Comedy” Find more at onbeing.org.