Parents rarely let go of their children, so children let go of them. They move on. They move away. The moments that used to define them - a mother's approval, a father's nod - are covered by moments of their own accomplishments. It is not until much later, as the skin sags and the heart weakens, that children understand; their stories, and all their accomplishments, sit atop the stories of their mothers and fathers, stones upon stones, beneath the waters of their lives.