This is always a fun rabbit hole to explore. Of course, the 'state', and all its legal concepts and documents are nothing more than ideas. They just happen to be ideas which most people aggressively enforce the assumption of. The state may produce documents that declare whatever they wish. I may disregard them. They may attempt to hurt me for doing so, but I can't control what choices they make. I may only determine my own thoughts and choices. Speaking of that, I am in possession and command of my mind and body, so I declare that I own it. Of course, you could wander down this rabbit hole further and contrive all sorts of arguments to the contrary, but I would suggest that the argument which is least logically flawed, or requires the fewest or simplest assumptions be granted to support its thesis is the most valid. Occam's Razor applied to logical analysis. Otherwise the argument can never reach a conclusion.