一日がぱっと過ぎ、一年がぱっと過ぎるように、青春もぱっと過ぎ、中年期もぱっと過ぎ、老年期もぱっと過ぎる。
Just as one day passes in a twinkling of an eye and just as one year passes in a twinkling of an eye, your youth passes in a flash, your middle-aged years pass in a flash, and your advanced-aged years pass in a flash as well.
Photo: 「Train passing on Platform」from Colin Angus Mackay by flickr