What is Ecumenism? Is Christian unity a legitimate hope or just a pious illusion? This book analyzes the real obstacles that stand in the path to unity and to propose solutions, where these are possible. It offers insight into the problem of Christian divisions and the relationships between Christian communities.

Contents: Introduction: the universal church and the ecumenical movement, Christopher Asprey; Part I Theological Ecumenism: Stumbling upon Peter? The question of the Church in contemporary ecumenical dialogue, Philip G. Ziegler; Ut unum sint: some cross-bench Anglican reflections, John B. Webster; De Lubac, Ratzinger and von Balthasar: a communal adventure in ecclesiology, Francesca Aran Murphy; Watch and pray: a reflection on the meaning of Ut, Susan Frank Parsons. Part II Ecumenical Theology: Section 1 Unity and Schism: The myth of schism, David Bentley Hart; The basis of Christian unity, Donald McLeod; Section 2 Authority: The ecumenical meaning of the Petrine ministry, Charles Morerod OP; A communion of love and the primacy of Peter: reflections from the Armenian church, Vigen Guroian; A reformed Papacy: the treatment of Papal primacy in the Worms Book (1540), Nicholas J. Thompson; Section 3 Eucharist: All change: eucharist is key, Peter Donald; Ecclesiastical communion: in dialogue with Calvinism, Eric Puosi. Epilogue: Persecution and Theological Ecumenism: United we stand, divided we fall: is persecution against Christians breaking down the walls between churches?, John Pontifex; Persecution and ecumenism, Robin Gibbons; Index of names.