Answer:
The more you take away, the bigger it gets.
A father's child, a mother's child, yet no one's son
Casper was a friendly one and Demi Moore made a clay pot with one.
In birth I spring forth, in life I unfold. In death I wilt and die, but rebirth restores all.
What building has the most stories?
I am a room that has a roof but no walls. What am I?