Interviews with authors of new books that deal with symbols in our daily lives. Cornell University professor Tracy McNulty, author of "Wrestling With The Angel: Experiments in Symbolic Life"; NY Post reporter Maureen Callahan, author of "Champagne Supernovas: Kate Moss, Marc Jacobs, Alexander McQueen and the 90s Renegades Who Remade Fashion"; and graphic journalist Wendy MacNaughton and Buzzfeed Books Editor Isaac Fitzgerald, co-authors of "Pen & Ink: Tattoos & the Stories Behind Them."