What Is The Moral Of The Fable "The Scorpion And The Frog"?

In this short and simple Aesop's fable, a scorpion, who couldn't swim, asked a frog to carry him across the river on her back. The frog hesitated, saying, "I'm afraid you will attack me." But the scorpion pointed out that it wouldn't be in his interest to do that, because, if the frog died in the water, he would drown. So she consented.

As they were half way across the water, the scorpion suddenly whipped up his tail and stung the frog hard. As the poison spread through the frog and she began to sink, she whispered, "Why? Why did you do that, when now we must both die?"

"Because," the scorpion replied sadly, "it's in my nature to sting. I'm sorry." As he spoke, they both disappeared beneath the water. The moral of the fable is that we can't overcome our nature, even if it works against our interest.

To me it means when you give someone the opportunity to be the best they take it. When you give someone the opportunity it comes to show which one they are. Are they the frog or are they the scorpion.