"A brother went to see Abba Silvanus on the mountain of Sinai. When he saw the brothers working hard he said to the old man, 'Do not labour for the food which perishes. (John 6.27) Mary has chosen the good portion.' (Luke 10.42) The old man said to his disciple, 'Zacharias, give the brother a book and put him in a cell without anything else.' So when the ninth hour came the visitor watched the door expecting someone would be sent to call him to the meal. When no-one called him he got up, went to find the old man and said to him, 'Have the brothers not eaten today?' The old man replied that they had. Then he said, 'Why did you not call me?' The old man said to him, 'Because you are a spiritual man and do not need that kind of food. We, being carnal, want to eat, and that is why we work. But you have chosen the good portion and read the whole day long and you do not want to eat carnal food.' When he heard these words the brother made a prostration saying, 'Forgive me, abba.' The old man said to him, 'Mary needs Martha. It is really thanks to Martha that Mary is praised.'"
Collection systématique X.99 (SC 474, p. 78) = Abba Silvanus 5 (PG 65, col. 409/410). The desert Christian: sayings of the Desert Fathers: the alphabetical collection, trans. Benedicta Ward (New York, NY: Macmillan Publishing Co., Inc., 1975), 223.