The bitterness of joy lies in the knowledge that is cannot last. Nor should joy last beyond a certain season, for, after that season, even joy would become merely habit.
Tanith LeeHow massively the mountains stand, while low to the ground the sand blows. The sand blows on and on. And then there are no mountains, none at all, the sand has kissed and whispered them away. And still, the sand blows on.
Tanith Lee