The Catholic Church embraces with hope the commitment to ecumenism as a duty of the Christian conscience enlightened by faith and guided by love. Here too we can apply the words of Saint Paul to the first Christians of Rome: “God’s love has been poured into our hearts through the Holy Spirit”; thus our “hope does not disappoint us” (Rom 5:5). This is the hope of Christian unity, which has its divine source in the Trinitarian unity of the Father, the Son and the Holy Spirit.
– John Paul II, Ut Unim Sint, 1995