In this distich is another line of which Pope was not the author. I do
not mean to blame these imitations with much harshness; in long
performances they are scarcely to be avoided, and in shorter they may be
indulged, because the train of the composition may naturally involve
them, or the scantiness of the subject allow little choice. However,
what is borrowed is not to be enjoyed as our own, and it is the business
of critical justice to give every bird of the Muses his proper feather.