Once three brothers came to visit an old man in Scetis and one of them said to him, “Abba, I have committed to memory the Old and New Testaments.” And the old man answered, “You have filled the air with words.” The second one said to him, “I have written out the Old and New Testaments with my own hands.” He said, “And you have filled the window-ledge with manuscripts.” Then the third said, “The grass is growing up my chimney.” And the old man replied, “You have driven away hospitality.”