Answer:
Covered in stone and sun. It's home to many but also none. What is it?
In Paris but not in France, the thinnest of its siblings.
Be sure to shout for its answers are weak, but there is no language it cannot speak.
Slayer of regrets, old and new, sought by many, found by few.
Sometimes black, sometimes white, I have veins but no blood
What did the piece of wood say when he saw the screwdriver and screws approaching?