2 As for you, when you hear the Saviour's counsel: “if you will be perfect, go and sell that you have, and give to the poor, and come follow me,” you translate his words into action; and baring yourself to follow the bare cross you mount Jacob's ladder the easier for carrying nothing. Your dress changes with the change in your convictions, and you aim at no showy shabbiness which leaves your purse as full as before. No, with pure hands and a clear conscience you make it your glory that you are poor both in spirit and in deed.
There is nothing great in wearing a sad or a disfigured face, in simulating and in showing off fasts, or in wearing a cheap cloak while you retain a large income. When Crates the Theban— a millionaire of days gone by— was on his way to Athens to study philosophy, he cast away untold gold in the belief that wealth could not be compatible with virtue. What a contrast he offers to us, the disciples of a poor Christ, who cram our pockets with gold and cling under pretext of almsgiving to our old riches.
How can we faithfully distribute what belongs to another when we thus timidly keep back what is our own? When the stomach is full, it is easy to talk of fasting. What is praiseworthy is not to have been at Jerusalem but to have lived a good life while there. The city which we are to praise and to seek is not that which has slain the prophets and shed the blood of Christ, but that which is made glad by the streams of the river, which is set upon a mountain and so cannot be hid, which the apostle declares to be a mother of the saints, and in which he rejoices to have his citizenship with the righteous.
Source: Letters (New Advent)