Carter continued his public speaking and advocacy and, in 2011, released the book Eye of the Hurricane: My Path from Darkness to Freedom.
"If I find a heaven after this life, I'll be quite surprised," he wrote in his letter to the New York Daily News. "In my own years on this planet, though, I lived in hell for the first 49 years, and have been in heaven for the past 28 years.
"To live in a world where truth matters and justice, however late, really happens, that world would be heaven enough for us all."