CONGREGATION FOR THE DOCTRINE OF THE FAITHRESPONSES TO SOME QUESTIONS REGARDING CERTAIN ASPECTSOF THE DOCTRINE ON THE CHURCH IntroductionThe Second Vatican Council, with its Dogmatic Constitution Lumen gentium, and its Decrees on Ecumenism (Unitatis redintegratio) and the Oriental Churches (Orientalium Ecclesiarum), has contributed in a decisive way to the renewal of Catholic ecclesiolgy. The Supreme Pontiffs have also contributed to this renewal by offering their own insights and orientations for praxis: Paul VI in his Encyclical Letter Ecclesiam suam (1964) and John Paul II in his Encyclical Letter Ut unum sint (1995).The consequent duty of theologians to expound with...