有关乐观和悲观的英文故事，有对话的那种

父亲欲对一对孪生兄弟作“性格改造”，因为其中一个过分乐观，而另一个则过分悲观。一天，他买了许多色泽鲜艳的新玩具给悲观孩子，又把乐观孩子送进了一间堆满马粪的车房里。 第二天清晨，父亲看到悲观孩子正泣不成声，便问：“为什么不玩那些玩具呢？” “玩了就会坏的。”孩子仍在哭泣。 父亲叹了口气，走进车房，却发现那乐观孩子正兴高采烈地在马粪里掏着什么。 “告诉你，爸爸。”那孩子得意洋洋地向父亲宣称，“我想马粪堆里一定还藏着一匹小马呢！”
The father wants to make "character transformation" to a pair of twin brothers, because one of them is too optimistic, and the other is too pessimistic. One day, he bought many lusters bright new toys for the pessimistic child, also feed in the optimistic child between to pile up with the horse dung in the garage in. The second day early morning, the father saw the pessimistic child is choking with sobs, then asked: "why doesn't play these toys?" "Play will be bad." The child is still crying. Father sighed, walked into the garage, but found that optimistic child is jubilant in horse manure out what. "Tell you, Dad." That child complacently declared to the father that, "I think the horse dunghill certainly also is hiding a pony!"