从前,一户人家的菜园里有一块石头。到菜园的人,不小心就会踢到那块石头,不是跌倒就是擦伤。儿子问:“爸爸,那块石头真讨厌,为什么不把它挖走?”爸爸这么回答:“那块石头在你爷爷小的时候就在那里了,它那么大,不知道要挖到什么时候。没事无聊挖石头,不如走路小心一点,还可以训练你的反应能力。”过了几十年,这块石头留到下一代,当时的儿子的儿子 Once upon a time, there was a stone in the garden of a family. To the garden people, accidentally kicked the stone, not a fall or abrasion. My son asks: “Daddy, that stone is really annoying, why do not you dig it?” “Dad replied:” The stone was there when your grandfather was young, so big, I do not know to dig When nothing is boring digging stones, it is better to walk a little more careful, you can also train your ability to respond. “” After decades, the stone to the next generation, son of the son