Glossa Ordinaria
Catena Aurea · Matthäusevangelium 5
Ye are the salt of the earth: but if the salt have lost his savour, wherewith shall it be salted? it is thenceforth good for nothing, but to be cast out, and to be trodden under foot of men.
(ap. Anselm.) When then they who are the heads have fallen away, they are fit for no use but to be cast out from the office of teacher.