One day the fox came a river, and prepared to swim across.
A scorpion was standing there and asked the fox to give him a ride to the other side.
The fox refused, saying, "If if I let you on my back you will sting me and I will die."
The scorpion swore he wouldn't do that, because if he did, he too would drown.
Although skeptical, the fox agreed, let the scorpion climb on his back, and began to swim.
In the middle of the stream, suddenly he felt a painful sting on his back!
He cried out to the scorpion, "Why, oh why, did you do that?! Now we are both going to die!"
And the scorpion, as they sank beneath the waves, replied, "It is my nature."