Observers of American Catholicism can be alternately impressed and puzzled by its polyphony of public voices. Some, in the name of tradition, call for pulling back from change; others, under the banner of Vatican II, push against the boundaries of doctrine. How does the Catholic Church navigate the tension between closure and openness and sustain its unity? Two new books by James Carroll and Paul Wilkes exemplify calls for greater openness in the church. Each, in differing tones, reflects upon the blessings and challenges of Catholic experience.