Ecumenism means pluralism. We cannot therefore expect that one method coversp the whole area of the encounter among the Churches. A method grows out of experience and experience is sensible to the variations of time and cultures. It is, however, possible to trace several - lines all of them pointing in the same direction. Ecumenism can, first of all, be described as a Copernican revolution: our confessional understanding of the Christian faith is no longer the center of the universe. Christ is this center and we all depend on him according to his specific call and gifts. Secondly we can mention the relation between unity and renewal: they are not alternatives as they come from the same Spirit of God. Thirdly we must notice a growth in unity and diversity. Unity is no longer synonimous of uniformity and diversity is conceived as centered in Christ and reconcilied in him. Finally we come to realize that Churches do not co-exist in this world of ours but the pro-exist. From here a new quest for reciprocal witness and assistance. All these views bring us to a new age which also means a new understanding of the conciliarity and catholicity of the Church (pp. 41-60).