Jimmy Carter signs copies of his book 'A Full Life' (8 images)

Former United States President Jimmy Carter signs copies of his book "A Full Life" at Barnes & Noble Fifth Avenue in New York City on July 7, 2015. James Earl "Jimmy" Carter, Jr. is an American politician, author, and member of the Democratic Party who served as the 39th President of the United States from 1977 to 1981. Photo by John Angelillo/UPI

Copies of former United States President Jimmy Carter's book "A Full Life" is on sale at at Barnes & Noble Fifth Avenue in New York City on July 7, 2015. James Earl "Jimmy" Carter, Jr. is an American politician, author, and member of the Democratic Party who served as the 39th President of the United States from 1977 to 1981. Photo by John Angelillo/UPI

Former United States President Jimmy Carter arrives to sign copies of his book "A Full Life" at Barnes & Noble Fifth Avenue in New York City on July 7, 2015. James Earl "Jimmy" Carter, Jr. is an American politician, author, and member of the Democratic Party who served as the 39th President of the United States from 1977 to 1981. Photo by John Angelillo/UPI

Former United States President Jimmy Carter arrives to sign copies of his book "A Full Life" at Barnes & Noble Fifth Avenue in New York City on July 7, 2015. James Earl "Jimmy" Carter, Jr. is an American politician, author, and member of the Democratic Party who served as the 39th President of the United States from 1977 to 1981. Photo by John Angelillo/UPI