Whether Sacred Doctrine is a Matter of Argument?

Objection 1: It seems this doctrine is not a matter of argument. For
Ambrose says (De Fide 1): "Put arguments aside where faith is sought."
But in this doctrine, faith especially is sought: "But these things
are written that you may believe" (John 20:31). Therefore sacred
doctrine is not a matter of argument.

Obj. 2: Further, if it is a matter of argument, the argument is
either from authority or from reason. If it is from authority, it
seems unbefitting its dignity, for the proof from authority is the
weakest form of proof. But if it is from reason, this is unbefitting
its end, because, according to Gregory (Hom. 26), "faith has no merit
in those things of which human reason brings its own experience."
Therefore sacred doctrine is not a matter of argument.

_On the contrary,_ The Scripture says that a bishop should "embrace that
faithful word which is according to doctrine, that he may be able to
exhort in sound doctrine and to convince the gainsayers" (Titus 1:9).

_I answer that,_ As other sciences do not argue in proof of their
principles, but argue from their principles to demonstrate other
truths in these sciences: so this doctrine does not argue in proof of
its principles, which are the articles of faith, but from them it goes
on to prove something else; as the Apostle from the resurrection of
Christ argues in proof of the general resurrection (1 Cor. 15).
However, it is to be borne in mind, in regard to the philosophical
sciences, that the inferior sciences neither prove their principles
nor dispute with those who deny them, but leave this to a higher
science; whereas the highest of them, viz. metaphysics, can dispute