You will find me in the mountains, and you'll find me in a creek.
I have no mouth, but I speak every tongue.
I have no ears, yet I answer every cry, and I always have the final word.
What am I?
It comes only before,
It comes only after,
Rises only in darkness,
But rises only in light.
It is always the same,
But is yet always different.
What am I?