Transience is the force of time that makes a ghost of every experience. There was never a dawn, regardless how beautiful or promising, that did not grow into a noontime. There was never a noon that did not fall into afternoon. There was never an afternoon that did not fade toward evening. There never was a day yet that did not get buried in the graveyard of the night. In this way transience makes a ghost out of everything that happens to us. - John O'Donohue in "Anam Cara: A Book of Celtic Wisdom"
