"With the increase of wealth the mania of covetousness increases."

“It is inevitable that the mind which does not have a place to turn to or any stable base will undergo change from hour to hour and from minute to minute due to the variety of its distractions, and by the things that come to it from outside it will be continually transformed into whatever occurs to it at any given moment.”

“We must not only guard against the possession of money, but also must expel from our souls the desire for it. For we should not so much avoid the results of covetousness, as cut off by the roots all disposition towards it. For it will do no good not to possess money, if there exists in us the desire for getting it.”

“The Conferences at Newadvent.org”

“Gold and the love of gain become to him his god, as the belly does to others. Wherefore the blessed Apostle, looking out on the deadly poison of this pest, not only says that it is a root of all kinds of evil, but also calls it the worship of idols, saying "And covetousness which is the worship of idols." You see then to what a downfall this madness step by step leads, so that by the voice of the Apostle it is actually declared to be the worship of idols and false gods, because passing over the image and likeness of God , it chooses to love and care for images stamped on gold instead of God.”

“It is possible that those who are in no way pressed down with the weight of money may be condemned with the covetous in disposition and intent. For it was the opportunity of possessing which was wanting in their case, and not the will for it.”

“Wherefore a monk's whole attention should thus be fixed on one point, and the rise and circle of all his thoughts be vigorously restricted to it; viz., to the recollection of God, as when a man, who is anxious to raise on high a vault of a round arch, must constantly draw a line round from its exact centre, and in accordance with the sure standard it gives discover by the laws of building all the evenness and roundness required....”