Answer:
Inside a burning house, this thing is best to make. And best to make it quickly, before the fire's too much to take.
What relies on columns but isn't a house, and asks for help but can't speak itself?
What gets wet while drying?
My life can be measured in hours. I serve by being devoured. Thin, I am quick. Fat, I am slow. Wind is my foe.
When I'm born I fly. When I'm alive I lay. When I'm dead I run.
Iām grown from darkness but shine with a pale light. Very round I am and always a lady's delight.