Quote from freealways:
Here is a nice story which illustrates how difficult it is to change one's behaviour.
A frog was sitting at the side of a lake when a scorpion approached him and asked the frog "Would you mind carrying me on your back to the other side of the lake Mr frog ?"
The frog replied : "now why would I do that, once you get onto my back you will sting me and then I will die"
The scorpion replied : "Now why would I do that ? If I sting you, and you die, I will drown"
Now that made perfect sense to the frog so, being the good guy he is, he said "O.K. then, hop on".
Just as he was in the middle of the lake the frog felt a sharp sting in his back so he turned his head towards the scorpion and asked "Now why did you do that for ?"
The scorpion replied : "I just couldn't help myself"
Jack