He/She is seeking Unnatural nature hidden inside the human beings.
There is people in nature and there is nature in people but there is unknown nature in this world.
People has made this natural materials into unnatural things which can destroy this world in few seconds.
Why there is such a material hidden on this Earth? He expresses that there are big contradictions left in this nature which makes really unnatural. Or Is this natural? Or is this meant to be.
Human can not hide this contradiction inside.