Arthur Brooks has held many roles in his life: professional French horn player in Barcelona, leader of the American Enterprise Institute, and now a professor of happiness at Harvard. The author and social scientist has a new book on the subject, “Build the Life You Want,” co-authored with Oprah Winfrey, coming out in September 2023. Arthur joined David to talk about the science of happiness, the relationship between new technology and waves of populism, how America’s dignity gap influences its politics, and the need to rebuild human connection.