Augustine of Hippo — as excerpted in the Catena Aurea on Luke 11:5-8

“(ubi sup.) But when thou shalt have obtained the three loaves, that is, the food and knowledge of the Trinity, thou hast both the source of life and of food. Fear not. Cease not. For that bread will not come to an end, but will put an end to your want. Learn and teach. Live and eat.”