I saw the same article on reality sandwich and just started reading his latest book Psychedelia. I find it to be very interesting and am saddened that Lundberg died at such a early age.
In the interview I like the fact that he refuses to compare the psychedelic experience to anything else like for instance the Eastern tradition. That's what he also talks about early on in the book stating more then 20 different things that psychedelics have been compared to.
The only thing that I was wondering is how he would explain the recent reasearch about a psychedelic brain having the same areas activated as a dreaming brain and (if I'm not mistaken) a meditating brain. Maybe there is more between these things than we may know. I don't know if he tackles this question in the book, but unfortunately we won't be able to ask him.
I think this is a great loss for the psychedelic community and like Inaniel I would advise the book to anyone.
"It permits you to see, more clearly than our perishing mortal eye can see, vistas beyond the horizons of this life, to travel backwards and forwards in time, to enter other planes of existence, even (as the Indians say) to know God." R. Gordon Wasson