In this episode, Rabbi Jonathan Sacks speaks to the Harvard cognitive psychologist Steven Pinker and the American philanthropist, Melinda Gates. First, Steven Pinker outlines his reasons for hope for a better world, drawing on themes from his recent book ‘Enlightenment Now’. Melinda Gates explores what motivated her and her husband Bill to dedicate their lives to philanthropy and explains who her moral role models were when she was growing up. Producer: Dan Tierney Series Editor: Christine Morgan