Former President Jimmy Carter will speak with Oprah Winfrey on an episode of her OWN inspirational interview series, "SuperSoul Sunday." The Nobel Peace Prize winner, who recently announced that he is battling cancer, will appear on the Sept. 27 season premiere in what OWN describes as "a conversation about faith and spirituality, issues facing our country today and how his global influence grew after he left the White House."The 91-year-old, who served as president from 1977 to 1981, will discuss the role his protestant faith played during his time at the White House.