A poem about life and death

I am more ancient than the wind
But, much younger than the sun
I am the human soul, and
Another soul spoke the first two lines
I rail against injustice, and
Then, go out and commit it
I am conflicted, but not constricted
For I can fly and soar above it all
Or come so low and dark, a pall
Screaming I run, and laughing, I cry
I give as easily as I take away
I am both a gift and a debt
From who and to whom?
Will you…