I placed an essay about interior of person in this HP. That is “Consideration on the Upper-left Quadrant of Ken Wilber’s Four Quadrants Theory“.
This essay studies some thoughts of Ludwig Wittgenstein, David J Chalmers, and Ken Wilber. How they considered about mind, mental state, subject, consciousness, namely interior of person. And how their thoughts differ.
My opinion is that only Wittgenstein noticed the logic of extremely private interior of person and Chalmers and Wilber missed the logic.