Catholic faith affirms objective truth because God is Truth and creation is intelligible. The act of faith is supra-rational in its object but not irrational in its assent: grace moves an intellect that has recognized credible signs and understood that God cannot deceive.
The comparison begins from truths already established by reason: reality is intelligible, contradiction cannot be true in the same respect, moral obligation is not created by appetite, and contingent being requires a first principle. A religious claim may deepen these truths, but it cannot reverse them without forfeiting intelligibility.
The Church recognizes rays of truth, moral seriousness and providential preparation outside her visible bounds. Recognition is not relativism. Whatever is true has one divine source; whatever contradicts the revealed identity of God, the Incarnation or the saving work of Christ cannot be received as a parallel completion.
Christ is not placed at the end of a neutral catalogue as one option among many. His public life, death and resurrection are historical claims; his apostolic Church makes a visible claim of authority; and the credibility of these claims must be judged by evidence rather than by a prior rule that excludes unique revelation.
Truth excludes contradiction. Careful discussion may define terms and remove calumny, but it must culminate in judgement: opposite propositions about God, revelation and salvation cannot both be true in the same respect, and charity never requires suspension of that principle.
The appropriate response to truth, contradiction and religious claims is neither contempt nor vague admiration. It is accurate quotation, patient distinction, positive proof of the Catholic position and an invitation to the fullness of truth and sacramental life in Christ.