What is human nature?
I have been asked this on more than one occasion.
We are fundamentally good.
We are God's image.
But there is a force at work within us. Evil unleashed, like a bengal tiger that has somehow been turned loose inside the royal gardens, or the proverbial 'bull in a glass shop;' we are completely and totally beautiful, purposeful, good, powerful, compassionate, just; but there is a force at work within us that claws and devours all goodness.
The term 'Cracked Eikons' is used by Scot McKnight to describe human beings. We are images of God, clearly reflective of who He is, and yet obviously no longer whole; like a cracked mirror will still reflect, and yet is also clearly not whole.