Photo-Illustration: Curbed: Photo: Courtesy of RAMSA New York’s “21 Questions” is back with an eye toward creative New Yorkers. Robert A.M. Stern and his 300-person architecture firm have designed more than 45 buildings in New York City, including 220 Central Park South and the downtown Four Seasons Hotel. He’s currently writing his 40th book, and his new memoir, Between Memory and Intervention: My Journey in Architecture, co-authored with Leopoldo Villardi, is out now from Monacelli Press. Name: Bob SternAge: 82Neighborhood: Upper East SideOccupation: Architect, historian, and educator What’s hanging above your couch? Behind me right now are photo-realist prints I acquired in the 1970s from artists like Ralph Goings and architectural…