steven naifeh and gregory white smith have penned a biography about events and then go. also tonight, marie lu on her book "legend." glad you have joined us. >> every community has a martin luther king boulevard. it's the cornerstone we all know. it's not just a street or boulevard, but a place where walmart stands together with your community to make every day better. >> nationwide insurance supports tavis smiley. with every question and every answer, nationwide insurance is proud to join tavis in working to improve financial literacy and remove obstacles to economic empowerment one conversation at a time. nationwide is on your side. >> and by contributions to your pbs station from viewers like you. thank you. [captioning made possible by kcet public television] tavis: steven naifeh and gregory white smith are pulitzer prize- winning authors. their latest is easily one of the most talked-about books of the year. a new biography of a vincent van gogh. it is titled "van gogh: the life." good to have you here. >> thank you very much. tavis: let me start by asking what it i