A Nightmare I Will Never Leave

The art of grasping madness is all I've ever known 
I'm missing pieces of my bones
I must be careful what my intellect replaces them with 
But I'm happy dragging my books of myths
Why do I have to replace?
Well, my ribs, there wasn't a trace
I replace them with my blood
What happens when it comes, the flood? 
The blood will wash away with the water
My heart left for the slaughter
I could hear my blood, I knew I would never be free
All that was left was me
As my blood left, I could hear someone with it, bones in the left hand, and a string in right
At the end end of the string was my heart, it was held tight, all I felt was fright  
This is an excursion I will never leave
Simple security I will never achieve  
As the end bears near I will show all my fear
My fear will be just as sincere as her cheer  
This was a seldom start
Nothing, could guard my heart