If you haven't read it yet, you might be interested in the book "
The Psychopathic God: Adolph Hitler" by Robert G. L. Waite discussed in a number of places on this forum the last couple of months. While it doesn't really answer your question, it surely gives a fairly good account of who he was and how he might have come up with some of his utterly crazy ideas. In one part, the author describes a scene in the early life of Hitler, in which a friend accompanied him (after a Wagner concert, if I remember correctly) and saw him acting for the first time pretty much like a totally possessed person, speaking and sounding differently, and as though speaking in front of an audience.
That night after the concert, he was walking with his friend very silently and later on they looked at the stars, and then Hitler began suddenly to be possessed by something that his friend described as almost something else speaking through him. That night supposedly was also the night that some of his "grant plans" got concrete. He also talked about this day later on, as one of the the major turning points in his life.
I'm not through the book yet, but as of now it looks like what the C's said about him might be pretty accurate. Since there is no electronic version of the book available, I can only describe it from memory at the moment. So a few things could be mixed up above.