Bishop Christopher Butler, a major contributor to the council and strong proponent of its teachings, finds that the document gives a "reaffirmation" to "a genuine sacramental episcopal collegiality" which was thrown into the background by the premature ending of Vatican I. He goes on to say: This seems to afford the basis for a recovery of the principle that the papacy—and now we must add the episcopate—is not the source of the actual life of the Church, but the coordinator of that life's various and peripheral spontaneities. This principle of subsidiarity is carried through to the point at which the lay Catholic is seen as a genuine creative force in the life of the People of God; and to the further point where it is realised that the whole human family, insofar as good will prevails, is a theatre of the operations of the grace-gifts of the Holy Spirit, and is cooperating in the building up of Christ's kingdom. He concludes that the Church which makes contemporary the saving truth of the gospel "is the sign and the instrument of the unity of the whole human race."