Pope Emeritus Benedict XVI was not able to complete his encyclical on faith during his pontificate, and Pope Francis chose to complete the work, Lumen Fidei (“The Light of Faith”.) Acton’s Director of Research, Samuel Gregg writes about the connection between these two men, made possible by their faith, at National Review:
[I]f there’s anything demonstrated by Pope Francis’s first encyclical letter Lumen Fidei (“The Light of Faith”), it’s a profound continuity between the two men: i.e., their love for and belief in the one, holy, Catholic and apostolic faith. Right at this encyclical’s beginning, Francis states the text’s first draft was prepared by his predecessor and “as his brother in Christ I have taken up his fine work and added a few contributions of my own” (LF 7).
The point being made here isn’t just that Joseph Ratzinger is probably the greatest theologian to sit on Peter’s Chair and may one day be declared a Doctor of the Church. A more subliminal message is that Catholicism’s content doesn’t change when one pope succeeds another. As many people don’t (and sometimes don’t want to) understand, Catholicism isn’t just another political movement that distorts or abandons its core beliefs under the guidance of consultants to gain votes from fickle voters.