just a month ago, president carter reminisced with george stephanopoulos about his latest book, "a full life," acknowledging that the final chapters are being written. >> i know that in a few years since i'll be 91 in october, that my travel capability and my vigor, physical vigor, is going to die down. >> reporter: mr. carter's parents, his two sisters and brother all died of cancer. the 39th president, from plains, georgia, was denied a second term, losing to ronald reagan in the midst of the iranian hostage crisis. but his post-presidency, one of the busiest ever, filled with the work of the carter center. president carter has canceled his schedule so he can stay in atlanta for treatment. he will possibly reveal more about his condition next week. the current occupant of the white house, president obama, says he and his wife are hoping for a fast and full recovery for president carter. david kerley, abc news, washington. >> as is much of america. thank you, david. >>> turning now...