Answer:
What liquid can contain the soul?
What travels from house to house and is sometimes narrow and sometimes wide but always stays outside?
A warrior amongst the flowers, he bears a thrusting sword. He uses it whenever he must, to defend his golden hoard.
When set loose I fly away. Never so cursed as when I go astray.
This thing all things devours: Birds, beasts, trees, flowers; Gnaws iron, bites steel; Grinds hard stones to meal; Slays king, ruins town, And beats high mountains down.
I am the kind of an ant that's good at math. What am I?