Augustine wrote On the Catechizing of the Uninstructed as a guide to teach people in ministry how to communicate with those at every strata and tribe of life, in order to reach them with the Christian message. As a result, this work is a treasure trove of insights on how to educate different groups of people, paying close attention to the way they think. In chapter 9 of this work, he talks about how to reach those we today would call influencers.
There are also some who come from the commonest schools of the grammarians and professional speakers, whom you may not venture to reckon either among the uneducated or among those very learned classes whose minds have been exercised in questions of real magnitude. When such persons, therefore, who appear to be superior to the rest of mankind, so far as the art of speaking is concerned, approach you with the view of becoming Christians, it will be your duty in your communications with them, in a higher degree than in your dealings with those other illiterate hearers, to make it plain that they are to be diligently admonished to clothe themselves with Christian humility, and learn not to despise individuals whom they may discover keeping themselves free from vices of conduct more carefully than from faults of language; and also that they ought not to presume so much as to compare with a pure heart the practised tongue which they were accustomed even to put in preference. But above all, such persons should be taught to listen to the divine Scriptures, so that they may neither deem solid eloquence to be mean, merely because it is not inflated, nor suppose that the words or deeds of men, of which we read the accounts in those books, involved and covered as they are in carnal wrappings, are not to be drawn forth and unfolded with a view to an (adequate) understanding of them, but are to be taken merely according to the sound of the letter. And as to this same matter of the utility of the hidden meaning, the existence of which is the reason why they are called also mysteries, the power wielded by these intricacies of enigmatical utterances in the way of sharpening our love for the truth, and shaking off the torpor of weariness, is a thing which the persons in question must have made good to them by actual experience, when some subject which failed to move them when it was placed baldly before them, has its significance elicited by the detailed working out of an allegorical sense. For it is in the highest degree useful to such men to come to know how ideas are to be preferred to words, just as the soul is preferred to the body. And from this, too, it follows that they ought to have the desire to listen to discourses remarkable for their truth, rather than to those which are notable for their eloquence; just as they ought to be anxious to have friends distinguished for their wisdom, rather than those whose chief merit is their beauty. They should also understand that there is no voice for the ears of God save the affection of the soul. For thus they will not act the mocker if they happen to observe any of the prelates and ministers of the Church either calling upon God in language marked by barbarisms and solecisms, or failing in understanding correctly the very words which they are pronouncing, and making confused pauses.2 It is not meant, of course, that such faults are not to be corrected, so that the people may say “Amen” to something which they plainly understand; but what is intended is, that such things should be piously borne with by those who have come to understand how, as in the forum it is in the sound, so in the church it is in the desire that the grace of speech resides. Therefore that of the forum may sometimes be called good speech, but never gracious speech. Moreover, with respect to the sacrament which they are about to receive, it is enough for the more intelligent simply to hear what the thing signifies. But with those of slower intellect, it will be necessary to adopt a somewhat more detailed explanation, together with the use of similitudes, to prevent them from despising what they see.
Augustine of Hippo, “On the Catechising of the Uninstructed,” in St. Augustin: On the Holy Trinity, Doctrinal Treatises, Moral Treatises, ed. Philip Schaff, trans. S. D. F. Salmond, vol. 3, A Select Library of the Nicene and Post-Nicene Fathers of the Christian Church, First Series (Buffalo, NY: Christian Literature Company, 1887), 291–292.