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.
I occur twice in eternity. And I'm always within sight.
Split me in half, and you get me and another me. What word am I?
Brings the sky a lot closer.
I go around in circles, But always straight ahead Never complain, No matter where I am led.
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.