Abstract

Can the 1985 proposal for the unification of the Christian churches co-authored by Karl Rahner and Heinrich Fries in Unity of the Churches: An Actual Possibility still provide a realistic basis for the unification of the churches? This paper considers the proposal as an application of the ecumenical principle that no greater burden than necessary be imposed as a requisite for full ecclesial communion, and of the hierarchy of truths. It explores the basic presuppositions of the proposal in light of Rahner’s reflections on the role of the creed within the context of theological pluralism. Finally, it considers the changing contours of global Christianity and the potential of Rahner’s thought to hold together in creative tension the at times competing currents of those who would locate the ultimate basis of unity in a maximalist theological orthodoxy and those who would find it in an almost exclusive emphasis on orthopraxy.