Just posting this for my own later reference, but don't let that stop you from commenting. ;-)
Jenson frequently gestures to the ambiguity or confusion of certain slogans, not simply to their “use” or “abuse”. This ambiguity is sometimes terminal (as seems to be the case for sola Scriptura). Slogans, we are told, are a necessary shorthand that emerges over time to signify a complex of propositions and practises. Despite the word’s stigma, slogans have a positive function. The problem with slogans is that they tend to develop a certain independence as they age, becoming untethered and paddling to foreign shores.