All aspects of the universe are subject to constant change, continually moving in the direction of enlightenment. Change but provides the doorways through which all must travel to find true peace.
When we're old, our lives become the sum of all whom we have loved. It is important not to waste anyone. One task of living out the last half of life is excavating and recovering all of those whom we loved the first half. Thus, the recovery of lost loves becomes an important way in which the past affects the present.