A Raven saw a Swan and desired for himself the same beautiful plumage as the Swan had.
The Raven thought that the Swan’s splendid white color came from his washing in the water in which he swam. So the Raven left the altars in the neighborhood where he picked up his living, and took up residence in the lakes and pools.
But cleansing his feathers as often as he would, he could not change their color, and through want of food he died.
Moral: Incorrectly changing your habits won’t alter your nature.