Lincoln said: Human action can be modified to some extent, but human nature cannot be changed.
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There will always be evil in this world. There always has been: Cain killed his brother.
However, now there are seven billion of us on this planet and we get to see and hear all about the very worst of the worst, crimes, the HEINOUS behavior of God's created souls.
The great adversary, Satan, wins sometimes. He did with this female.