“For such dignity and authority belong to the Church that she alone is the center of truth and of Catholic unity. It is the Church in which alone religion has been inviolably preserved and from which all other Churches must receive the tradition of the Faith.
To them [the Roman Pontiffs], in the person of the Prince of the Apostles, were divinely entrusted by Christ our Lord, the charge and supreme care and the power of feeding the lambs and sheep; in particular, of confirming their brethren, and of ruling and governing the universal Church”
Blessed Pope Pius IX
(Apostolic Constitution where the pontiff proclaimed the dogma of the Immaculate Conception)