I think it's quite fruitful to assume that the brain consist of several layers of psychical processes, each at a different level in evolution and not always in

I think it's quite fruitful to assume that the brain consist of several layers of psychical processes, each at a different level in evolution and not always in tune with each other. It seems to be closer to the truth than assuming we are 'whole', or 'one mind'. I think that's pretty non-controversial, considering what we know about how brain anatomy, but then I'm not an expert. Also, perhaps the particular language he used was useful in dealing with patients?