After suffering an eclipse during the post-Vatican II liturgical reform, popular piety has regained its vital role in the spiritual life of Catholics. In response to its re-emergence, the Congregation for divine Worship and the Discipline of the Sacraments issued this book on December 17, 2001. The Directory was written for bishops and their collaborators as a pastoral guide addressing the relationship between liturgy and popular piety. This book provides a chapter-by-chapter commentary on the Directory, summarizing its contents, highlighting its strengths and weaknesses, and offering suggestions as to how devotional practices can be implemented in the United States. For liturgists, religious educators and students, pastoral leaders, and other interested Christians, this volume is helpful toward promoting a vigorous and authentic devotional life in the community, while respecting the preeminence of liturgical worship.