Another version of this story describes a fox who agrees to carry a scorpion on its back across a river, upon the condition that the scorpion doesn't sting him. But the scorpion does indeed sting the fox when they are in midstream. As the fox begins to drown, taking the scorpion with him, he pleadingly asks why the scorpion has jeopardized both of them by stinging. "Because it's my nature." (This story is attributed to Native Americans lore.)
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This story says that all suffering comes from trying to be something which one is not.
Each acts according to its nature and no amount of logic or reason overcomes our basic fundamental nature...
Despite the consequences all things cannot be but what they are.