Answer:
I can be written, I can be spoken, I can be exposed, I can be broken.
I grow where no flower grows, where no light touches the walls, up or down, that I don't care, was here before people were.
If you spot one of these eastern warriors, they're not doing their job right.
I never was, am always to be. No one ever saw me, nor ever will. And yet I am the confidence of all, To live and breath on this terrestrial ball.
I turn around once. What is out will not get in. I turn around again. What is in will not get out.
I'm the source of all emotion but I'm caged in a white prison.