Answer:
Halo of water, tongue of wood. Skin of stone, long I've stood. My fingers short reach to the sky. Inside my heart men live and die.
They can be harbored, but few hold water. You can nurse them, but only by holding them against someone else. You can carry them, but not with your arms. You can bury them, but not in the earth.
What flares up and does a lot of good, and when it dies is just a piece of wood?
What has four legs during the day; and six or eight during the night?
I am always hungry, I must always be fed. The finger I lick will soon turn red.
How do you know if a sniper likes you?