It is incorrect to reason that our mothers of former lives are no longer our mothers just because a long time has passed since they actually cared for us. If our present mother were to die today, would she cease to be our mother? No, we would still regard her as our mother and pray for her happiness. The same is true of all our previous mothers – they died, yet they remain our mothers. It is only because of the changes in our external appearance that we do not recognize each other.
Geshe Kelsang Gyatso