70 Whenever a man has wandered from this path, the Church has never failed to use her maternal authority to call him again and again to the right road. She knows well that there is no other truth than the one truth she treasures; that there can be no "truths" in contradiction of it. Thus she repeats and bears witness to the words of the Apostle: "For we can do nothing against the truth, but only for the truth."(24)
Source: Ad Petri Cathedram (Vatican.va)