You're right KPM. Elvis was a very complex person with a lot of bottled-up energy and emotions that spilled out in a hundred different ways. I don't think he even understood himself.
I bet that if he had been a child of today, doctors would have wanted to put him on Retalin. Even as an adult he seemed to border on hyper-activity...never could stay still for long and I think his mind was the same way, what they call a "busy mind". I've been told by a doctor I have one and I can tell you, it's not a restful way to be.
I think it's good to want to be able to understand what Elvis was really all about but I think it's also a losing battle because of all the crisscrossed information out there.