We do not wonder that there is conflict in the world. There is now, and has been from the time that Cain slew Abel, so much of hatred.
The idea of the split personality is as old as Genesis. For a start, Eve was manufactured from Adam's rib. Then there's Cain and Abel, twins at war. They were followed by Esau and Jacob, likewise divisible into hairy and smooth types.
Be doin artists in like Cain did Abel, Now they money's gettin stuck to the gum under the table.
This is a very violent place to live, the Earth, and we're a very violent species. Cain is still killing Abel. We see that every day.
Let's be honest, the cards' on the table: Jealousy's a sin, Cain killed Abel. Backstabber...Caesar had Brutus. It's hard to weed 'em out, even Jesus had Judas.
Abel has left mathematicians something to keep them busy for five hundred years.
God the first garden made, and the first city Cain.