I have a very strong inner voice that talks to me constantly (though I can sometimes shut it off with music, a skill I had to learn). I am fond of my inner voice; it literally is me. But like the author, I have no "mind's eye". I can't 'see' things when I visualize; all my mental conceptions are abstract (except for audio). To me, that's normal; I can't imagine people being able to 'see' things in their mind (I remember when I was younger trying very hard just to visualize a circle; it never really came to me). It's normally not a problem for me, except that I have difficulty recognizing faces (and therefore names). And I have always had an excellent memory otherwise. All this reinforces to me once again how different individual people can be and (therefore) how diverse their learning needs must be (no matter what you think of learning styles).