Pseudo-Jerome — as excerpted in the Catena Aurea on Mark 9:30-37

“It was fit also that they should dispute concerning the chief place by the way; the dispute is like the place where it is held; for lofty station is only entered upon to be quitted: as long as a man keeps it, it is slippery, and it is uncertain at what stage, that is, on what day, it will end.”