Yesterday is history.Tomorrow is mystery.Today is a gift.That's why it is called present*!这句话的最最最早来源是什么?全文是什么?

　　桃李满天下,龟仙人桃树下教导熊宝宝,说了句著名的英语谚语：
　　Yesterday is a history,
　　tomorrow is a mystery,
　　but today is a gift,
　　that is why it is called Present.
　　这句谚语最早我是从一部叫《力克千年虫》的新加坡剧集中知道的,但稍微有些不同：
　　Yesterday is a history,
　　tomorrow is a mystery,
　　only today is a gift,
　　that's why we call it Present.
　　听说这句话来源于越南的释一行禅师,原话似乎是：
　　Yesterday was history,
　　Tomorrow will be a mystery,
　　Present is gift.
　　另外,有这么一首英文诗（可能不能称其为诗）：
　　Dear friends:
　　To realize the value of ONE YEAR
　　想知道一整年的价值
　　ask the student who has failed a class
　　就去问被当过的学生
　　To realize the value of ONE MONTH
　　想知道一个月的价值
　　ask a mother who gave birth to a premature baby
　　就去问曾经早产的母亲
　　To realize the value of ONE WEEK
　　想知道一个礼拜的价值
　　ask the editor of a weekly newspaper
　　就去问周报的编辑
　　To realize the value of ONE HOUR
　　想知道一个小时的价值
　　ask the lovers who are waiting to meet
　　就去问等待见面的情侣
　　To realize the value of ONE MINUTE
　　想知道一分钟的价值
　　ask a person who missed the train
　　就去问刚错过火车的人
　　To realize the value of ONE SECOND
　　想知道一秒钟的价值
　　ask a person who just avoided accident
　　就去问刚闪过一场车祸的人
　　To realize the value of ONE MILLISECOND
　　想知道百分之一秒的价值
　　ask the person who won a silver medel in the Olympics
　　就去问奥运会银牌的得主
　　Treasure every moment that you have!
　　珍惜你所拥有的每一个瞬间
　　Yesterday is history.Tomorrow is mystery.
　　昨天已成为历史.明日却依然是谜.
　　Today is a gift.
　　今天是珍贵的礼物.
　　That's why it is called present*!
　　那就是它为什么被称作"当下"的原因.
　　Show your friends how much you care...
　　让你的朋友知道你有多在乎他们...
　　* present,在英语中除了表示"当下","目前"以外,更有"礼物""礼赠"的意思.
　　当然,gift除了"礼物"还有"天赋"之意.
　　总之,大家珍惜每一天吧.