It does not mean uniformity in all expressions of theology and spirituality, in liturgical forms and in discipline. Unity in multiplicity, and multiplicity in unity:  in my Homily for the Solemnity of Sts Peter and Paul on 29 June last, I insisted that full unity and true catholicity in the original sense of the word go together. As a necessary condition for the achievement of this coexistence, the commitment to unity must be constantly purified and renewed; it must constantly grow and mature.