St. Augustine walking by the sea-shore, meditating on the Trinity; he comes upon a child, who has made a hole in the sand and in vain tries to fill it with water with the aid of a shell or a spoon

St. Augustine walking by the sea-shore, meditating on the Trinity; he comes upon a child, who has made a hole in the sand and in vain tries to fill it with water with the aid of a shell or a spoon