Ecumenical prefaces / Avery Cardinal Dulles, Kallistos Ware, Kenneth Stevenson, Marc Lienhard -- Purity and plenitude : evangelical reflections on Congar's Tradition and traditions / John Webster -- Yves Congar and Thomism / Fergus Kerr -- Yves Congar and Catholic church reform : a renewal of the Spirit / Gabriel Flynn -- Congar's theology of the laity / A.N. Williams -- Cardinal Yves Congar : a man of the church / Karl Cardinal Lehmann -- In hope of unity / Jean-Pierre Jossua -- The church's sacramental celebration of the Easter mystery : Yves M.J. Congar and ecumenical liturgical perspectives / Bruno Bürki -- Cardinal Congar's ecumenism : an "ecumenical ethics" for reconciliation? / Gabriel Flynn -- Yves Congar as historian of cclesiology / John W. O'Malley -- An historian's reflections on Yves Congar's Mon journal du Concile / J.J. Scarisbrick - The system and the truth in the diaries of Yves Congar / Alberto Melloni -- I believe in the Holy Spirit : the role of pneumatology in Yves Congar's theology / Richard P. McBrien -- Congar on tradition / Jonathan Robinson -- Notes on the theology of religions / Georges Cardinal Cottier -- Yves Congar : theologian of grace in a wide world / Thomas F. O'Meara -- Mediating the non-Christian religions : Congar, Balthasar, nature and grace / Stephen Fields -- The appeal to Yves Congar in recent Catholic theology of religions : the case of Jacques Dupuis / Terrence Merrigan -- Epilogue Yves Congar's theology in the new millennium / Gabriel Flynn