Saint Augustine, the African bishop and theologian of the early 5th century, spent many years writing about God as a Trinity of Persons, a mystery which both consumed his attention and yet eluded his understanding.[i] So the story goes, he was walking by the seaside one day, meditating on the Trinity, how God could be One essence, and yet, at the same time, three Persons. He came onto a little child. The child had dug a small hole in the sand, and with a seashell was scooping water from the ocean into the hole. Augustine watched him for a little while and finally asked the child what he was doing. The child answered that he wanted to scoop all the water from the sea and pour it into the hole in the sand. Augustine felt impelled to correct the child. “That is impossible,” Augustine said. “The sea is too large and the hole is too small.” And now it was this child who was impelled to correct Augustine. The child said, “That is true, but I will sooner draw all the water from the sea and empty it into this hole than you will succeed in penetrating the mystery of the Holy Trinity with your limited understanding.” Augustine turned away in amazement, and when he looked back, the child had disappeared. Augustine had been put in his place, not a bad place, but simply in a place of recognition that he, too, was a child of God, a God whom he would mysteriously experience but never fully understand.