In his memoir Jimmy Carter recalls trying to copy the habits of black boys. In his poor peanut-farming community his closest confidants did not share his skin colour, and he wanted to fit in. But Mr Carter lived in the big house; his friends in tenant shacks. In Plains, Georgia, it still seems a wonder that the white child who was always out of place in the Jim Crow South became America’s 39th president. On December 29th he died, at 100, a mile from where he was born.