Pope Benedict said:
This year, as we know, marks the hundredth anniversary of the modern ecumenical movement, which began with the Edinburgh Conference’s appeal for Christian unity as the prerequisite for a credible and convincing witness to the Gospel in our time. In commemorating this anniversary, we must give thanks for the remarkable progress made towards this noble goal through the efforts of committed Christians of every denomination. At the same time, however, we remain conscious of how much yet remains to be done. In a world marked by growing interdependence and solidarity, we are challenged to proclaim with renewed conviction the reality of our reconciliation and liberation in Christ, and to propose the truth of the Gospel as the key to an authentic and integral human development. In a society which has become increasingly indifferent or even hostile to the Christian message, we are all the more compelled to give a joyful and convincing account of the hope that is within us (cf. 1 Pet 3:15), and to present the Risen Lord as the response to the deepest questions and spiritual aspirations of the men and women of our time…
Our commitment to Christian unity is born of nothing less than our faith in Christ, in this Christ, risen from the dead and seated at the right hand of the Father, who will come again in glory to judge the living and the dead. It is the reality of Christ’s person, his saving work and above all the historical fact of his resurrection, which is the content of the apostolic kerygma and those credal formulas which, beginning in the New Testament itself, have guaranteed the integrity of its transmission. The Church’s unity, in a word, can never be other than a unity in the apostolic faith, in the faith entrusted to each new member of the Body of Christ during the rite of Baptism. It is this faith which unites us to the Lord, makes us sharers in his Holy Spirit, and thus, even now, sharers in the life of the Blessed Trinity, the model of the Church’s koinonia here below.
Archbishop Williams said:
Christians have very diverse views about the nature of the vocation that belongs to the See of Rome. Yet, as Your Holiness’s great predecessor reminded us all in his encyclical Ut Unum Sint, we must learn to reflect together on how the historic ministry of the Roman Church and its chief pastor may speak to the Church catholic—East and West, global north and global south of the authority of Christ and his apostles to build up the Body in love; how it may be realized as a ministry of patience and reverence towards all, a ministry of creative love and self-giving that leads us all into the same path of seeking not our own comfort or profit but the good of the entire human community and the glory of God the creator and redeemer.