Alan Yentob talks to Philip Roth in the second half of a two-part film.After his scandalous debut with Portnoy's Complaint, and the intensely personal novels of his early career, Philip Roth turned this samefearless vision to some of the great themes of the American century - civil rights, McCarthyism, the Vietnam war - as his characters become impaled on history.In a career spanning six decades Roth became one of the most controversial and influential writers of the modern age, and only now, with the advent of his 80th birthday, is he ready to reveal all.