Liturgy Institute London

For a detailed and peaceful study of Liturgy

Research & Publishing


The Holy Father convoked the Synod of Bishops to reflect on the Word of God in October 2008 following upon both the 2005 Synod on the Eucharist and the Encyclical Letter Ecclesia de Eucharistia of the late Pope John Paul II. The Pontiffs’ continuing request that the bishops focus on the Church’s liturgy has encouraged us to form an editorial committee to inaugurate an international and ecumenical project of research and publication on post-Vatican II liturgical texts.
We see ourselves in continuity with Leo Cunibert Mohlberg OSB, Leo Eisenhöfer OSB and Peter Siffrin OSB, of Sant’Anselmo, Rome, who prepared for the liturgical renewal, which would be mandated by the Second Vatican Council, through their corpus of critical editions of ancient liturgical documents published in the corpus Rerum Ecclesiasticarum Documenta (RED). Since the publication of the RED corpus and the post-conciliar liturgical books, much scholarly attention has been dedicated to their translation and pastoral implementation. We see now that the time is opportune to deepen the academic study and appreciation of the renewed liturgical books. Accordingly, in the corpus Documenta Rerum Ecclesiasticarum Instaurata (DREI) we wish to offer a hermeneutical and literary critical analysis of the liturgical documents renewed (Instaurata) at the behest of the Council for the Church’s further discerning the course of liturgical renewal.

Just as the RED corpus had ecumenical import in the modern liturgical renewal, so too the DREI corpus will provide the academic resources for fruitful ecumenical study.

For the first two book series in the DREI corpus we have taken the name Appreciating the Liturgy. Just as ‘appreciating’ is defined in the Oxford English Dictionary as being ‘sensitive to … any delicate … distinction’, so too, ‘Appreciating the Liturgy’ expresses the desire of this committee that, far from polarising positions, the deeper, more detailed and delicate study of the renewed liturgical texts may offer both to future students of the liturgy the resources for deeper and more eirenic study and to bishops the resources they need to fulfil their ministry of directing the future course of liturgical renewal.

The initial call for a new model of liturgical renewal was included in a paper given at the congress of Societas Liturgica, ‘Liturgy and the Piazza’ held in Palermo on 11th August 2007:

… we have come to promote a hermeneutical and literary-critical appreciation of the liturgical texts promulgated since the Second Vatican Council. And so … we now propose a new model of Liturgical Renewal which we call ‘Appreciating the Liturgy’, for, to the degree to which we deepen our appreciation of the current liturgical documents, will the Church discern the way forward.

This new model, in continuity with the mission at the Pontifical Institute of Liturgy at Sant’Anselmo, promotes the intellectual apostolate as a gift, in supportive co-operation with the hierarchy, and a sign of vitality in the Church’s theological and liturgical life.

James G. Leachman
Daniel P. McCarthy