Answer:
I am always in front of you, but you will never see me. What am I?
As destructive as life, As healing as death; An institutioner of strife, Just as prone to bless. It is all that is good, Yet with an evil trend; As it was the beginning of things, It can also be the end.
I'm light as a feather, yet the strongest man can't hold me for more than 5 minutes.
What asks but never answers?
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.
What language does a billboard speak?