Are humans matter.. or psyche?

well, we must first define matter and psyche
matter is everything that occupies space and has mass and weight
the psyche is the influence of thought, personality and behaviour of humans
now, if we had to decide one or another (not both, nor neither), i would decide humans are matter, because we are mostly mass and weight and occupy space. If we were only psyche, were would that be? Because we are matter, we do have a brain. We can think, do and be. If we were only psyche, were would we be? that will bring us in an existentialism crysis, because if there was no matter, this would all be a dream, or matter is not physical just like psyche, so physical things don't exist. We don't exist. Were are we?
So, we are definetely matter. Psyche doesn't change us at all. We are who we are because of our DNA and because of our experiences in life. If psyche is the influence to think, do and be, then what is our brain? Our brain does have conscience and unconsciousness and we have our personality because of our DNA and we are who we are because of that and because of our experiences that later become knowledges and wisdom. Psyche doesn't exist, psyche is a religion, psyche is impossible to feel, bear, sense. Even passion, the ignition that make us do what we do with or without reason, is called adrenaline, in small or big quantities, and its all a chemical process in our brain. PSYCHE DOES NOT EXIST!!

How can things become someone's property?

Well, now-a-days, everything that is inside the boundaries of a country belongs to the country (except people, duh!). Even animals. But my question is, why? In the beggining of times you found something and it was yours, but when did it happen that something that doesn't have an owner or a explicit and verifiable thing that says that that something belongs to someone, belongs to the government? To rephrase that, when and who said that? Is it on the constitution? (I could answer that question, but it would take me a bit of time and my will is not in a good mood today), if so, then who owns the piece of paper that says that I own something?
today, if you want to own something, you have to meet the conditions the previous owner says (ussualy to pay money), but, who is the very first owner of that thing? in fact, who is the very first owner of everything? God? (oh dear lord in the otherworld illuminate us with your wisdom and help your children in Earth to understand your will, OH LOORD!)
no, seriously, who was the first owner of anything?
I hope I can go on with this post, but I missed the class our teacher sent us this homework, so all I said started from scratch, not like my other posts where I actually did think a lot to say what its there. Well, this is the E.N.D. (the extreme point of something, or Energy Never Dies? did Black Eyed Peas answer what they meant with the name of their last album?)