超简单，农夫与蛇的故事，英语

A farmer saw a snake frozen stiff in the cold winter, thought it was
very pitiful, picked up it, held the bosom cautiously, was warming it
with the nice and warm body. That snake has received the warm air,
recovered gradually, also restored the vitality. When it revives
thoroughly, then immediately restored the natural disposition, has
nipped benefactor maliciously with the sharp poison fang, caused him
to receive the fatal wound. Farmer's at the point of death time
repents bitterly said that, "My pitiful evil person, does not
distinguish the quality, finally has harmed own, encounters such
retribution for evildoing."