Someone once told me that the rule of nature is to move forward at all times. A sapling cannot regress into a seed whence its sprout or a drop of rain cannot go back to the cloud. Through the example the person intended to say that filial love or the love a child has for its parent exists only in theory not in practice. Have you ever heard of a sparrow returning to the nest of its old parents? Once the bird learns how to fly it leaves the nest for good never to return to its parents again said