16 But I myself have seen monks of quite a different stamp from this, men whose renunciation of the world has consisted in a change of clothes and a verbal profession, while their real life and their former habits have remained unchanged. Their property has increased rather than diminished. They still have the same servants and keep the same table. Out of cheap glasses and common earthenware they swallow gold. With servants about them in swarms they claim for themselves the name of hermits. Others who though poor think themselves discerning, walk as solemnly as pageants through the streets and do nothing but snarl at every one whom they meet. Others shrug their shoulders and croak out what is best known to themselves. While they keep their eyes fixed upon the earth, they balance swelling words upon their tongues. Only a crier is wanted to persuade you that it is his excellency the prefect who is coming along. Some too there are who from the dampness of their cells and from the severity of their fasts, from their weariness of solitude and from excessive study have a singing in their ears day and night and turn melancholy mad so as to need the poultices of Hippocrates more than exhortations from me. Great numbers are unable to break free from the crafts and trades they have previously practised. They no longer call themselves dealers but they carry on the same traffic as before; seeking for themselves not “food and raiment” as the apostle directs, but money-profits and these greater than are looked for by men of the world. In former days the greed of sellers was kept within bounds by the action of the Ædiles or as the Greeks call them market-inspectors, and men could not then cheat with impunity. But now persons who profess religion are not ashamed to seek unjust profits and the good name of Christianity is more often a cloak for fraud than a victim to it. I am ashamed to say it, yet it must be said— we are at least bound to blush for our infamy— while in public we hold out our hands for alms we conceal gold beneath our rags; and to the amazement of every one after living as poor men we die rich and with our purses well-filled.
But you, since you will not be alone but one of a community, will have no temptation to act thus. Things at first compulsory will become habitual. You will set to work unbidden and will find pleasure in your toil. You will forget things which are behind and will reach forth to those which are before. You will think less of the evil that others do than of the good you ought to do.
Source: Letters (New Advent)