Prizewinning historian Garry Wills argues that changes have been the evidence of life in the Catholic Church. It has often changed, sometimes with unwanted consequences, more often with good. In this brilliant and incisive study, he gives seven examples of deep and serious change that have taken place (or is taking place) within the last century. As Wills contends, it is only by examining the history of the Church that we can understand Pope Francis's and the Church's challenges.