"If you are Catholic, this is a post-Vatican II wrap-up and short catechism, and an invitation to deeper faith. If you are a no-longer-practicing Catholic, this is an invitation to take a fresh look at your old family. If you come from a different religious tradition, we welcome you to this overview of what Catholics stand for. If you have no religion, we hope this will be a new opening to God," writes Foley. "God came visibly in Jesus to save all of us from our selfishness, isolation, brokenness, sin. Jesus gathers around himself a Body that is both spiritual and visible, whose main characteristic ought to be unity and love. We fail, day by day. But mercy prevails."