Since the Second Vatican Council, the liturgy has become the source of conflicting opinions. This situation has given rise to disputes that continue to divide those who practice their faith. But what has created this state of affairs? Author Denis Crouan shows how the decisions made by Vatican II that aimed at restoring the Roman rite were presented poorly, applied incorrectly, and often not applied at all. In many places the Mass has been turned into a permanent work-in-progress, in which the objectivity of the liturgy yields to the subjectivity of those who take part in it. Where does the current unwillingness to apply the liturgical rules come from? Why have the directives of the last council been ignored or circumvented? This book offers answers to the questions asked by Catholics who want to understand their liturgy better, so as to put an end to deviant practices that threaten Church unity.