If you have something to eat and notice your thought wanting to eat alone on account of desire and not of need, in this respect you do not regard him as yourself. Even if you only have enough for whatever you need, if you do not give him some of this, in this respect you do not regard him as yourself.“
Other Old Man” John, Letters From The Desert: A Selection of Questions and Responses (St. Vladimir’s Seminary Press Popular Patristics Series)