Gregorij de Valentia oratio,

Gregory of Nazianzus original: "Diuus Gregorius Nazianzenus" says well: "Nothing, brothers, could be devised more unjust than our faith, if it fell only to the learned. For the common multitude, just as they are deprived of gold and silver and other precious things which are considered great and beautiful by most people here, would also be deprived of this; and God would hold that which is high and exalted, and open only to a few, to be pleasing and acceptable, while on the contrary, He would spurn and reject that which is closer and does not exceed the grasp of the common people." If, therefore, it is necessary for everyone at all to place faith in legitimate teachers, and to do so not lightly, but maturely, gravely, and prudently; and if the uneducated and untaught cannot be prudently impelled to this by the judgment and comprehension of doctrine (of which they are destitute), it remains, indeed, that they can and must be led to assent by the authority of teachers. Not that they should believe because of the human authority of the teacher (for this must also be noted against the cavils of the Sectarii sectarians/heretics), but because they ought to be moved by it to prudently incline their mind to desire to believe infallibly, because of divine revelation, that which is proposed by a legitimate teacher regarding matters of faith as divinely revealed. For there is only authority, says In the oration on maintaining moderation in Disputations.