Former Asst. U.S. Attorney James Zirin argues that the U.S. Supreme Court has become too partisan in his new book, Supremely Partisan. Award-winning Scottish actor Alan Cumming on his new memoir, You Gotta Get Bigger Dreams. Television writer and producer Eli Attie discusses an exhibition of his late father David Attie’s photography now at the Brooklyn Historical Society. On today's Please Explain, we're looking at the secret life of ballerinas with Ashley Bouder, principal dancer in the New York City Ballet, and Tiekka Tellier, who spent 16 years as a professional ballerina and founded Everyday Ballet.