Cardinal Yves Congar is universally known and respected as the great ecclesiologist of Vatican II whose seminal ideas helped to reconfigure the landscape of Catholic theology following the council. Less well known is his role in contributing far-reaching insights to the emerging liturgical movement in the church. This collection represents several of Congar's decisive contributions. Reading them makes possible a deeper and more cogent reception of the key ideas of the council documents. These texts are at once both erudite and exciting, both essential and pastorally incisive. There has never been a better time to disseminate these critically important liturgical insights than the present moment.