I am me. If I was not me, I would be someone else, but I'm not. At least I don't think I am, or he doesn't think he is. I know I'm here somewhere, unless I'm not me, in which case I could be anywhere or nowhere. It comes down to this: I am me, but if I'm not me, than I'm someone else. But if I'm someone else, then I'm not that person either because if I am someone else, how can I be that person (if I am someone else)? If you are confused by this reasoning, just remember this: confusion is just a state of mind, it only exists in your mind, and it is not real. So you're not really confused.