600. A regenerated internal man without a regenerated external also, may be likened to a bird flying in the air with no resting place on dry land except in a marsh, where it is attacked by serpents and frogs, so that it flies away and dies. It may be likened also to a swan swimming in mid-ocean, which cannot reach the shore and make her nest, so that the eggs she lays sink in the water, where they are eaten by fishes. It may be likened also to a soldier on a wall which is pulled down under him, so that he falls headlong and dies amid the ruins. Again it may be likened to a beautiful tree transplanted into filthy soil where troops of worms eat up its roots, so that it withers and dies. It may also be likened to a house without a foundation, or to a column without a pedestal. Such is the internal man when it alone is reformed and not the external also; for it then has no means of determining itself to doing good.