The Real Monsters

They say that the worst monsters live inside our heads. They prey on us when we are weak, gnashing their razor sharp teeth at us and with their glowing eyes, but aren't the oversized demons the ones we know. Shouldn't we fear most the demon we don't? Is there a reason we fear the same beings, the same forms with death in their eyes? Worst of all, the undefeated ones that feed of our pain. Maybe, the monsters in our head are mere warnings of our incredible ability to be purely cruel. Maybe WE are the real monsters.