"But before I begin to discuss the meaning of the words, I think it well to mention that in different Churches some additions are found in this article. This is not the case, however, in the Church of the city of Rome; the reason being, as I suppose, that, on the one hand, no heresy has had its origin there, and, on the other, that the ancient custom is there kept up, that those who are going to be baptized should rehearse the Creed publicly, that is, in the audience of the people; the consequence of which is that the ears of those who are already believers will not admit the addition of a single word."
January 1, 1970
https://en.wikiquote.org/wiki/Tyrannius_Rufinus