Quoted from Lecture 2 of The City of God (Books that Matter) by Charles Mathewes (The Great Courses)

Augustine [of Hippo] knew the power and the danger of idolatry and celebrity. And he knew the danger of both was first to permit the idolater to offload the duty of thinking onto their idol. And second to seduce the celebrity, in turn, into thinking his fans have nothing insightful to say. That treatment of a fellow human, a fellow christian, would be not the achievement of theology but the avoidance of it. And he went out of his way in his life and in his words to forestall such approaches.