My own scepticism knows very few bounds so it was meant as a positive. I’m sceptical every time I read the obviously self-serving themes in some well-known writings, and I wonder how the original authors would have expressed their anger at having their words twisted and mis-interpreted.
I thank you for your interest, and find your remarks about the inner workings of enlightenment being discussed in outward terms equally interesting. For me too, transcendence of the physical was the ultimate goal in very ancient times. I also believe that it was extensively discussed and written about, either directly or through metaphor and even riddles, a central tenet of cultures in many different places. So we might have a slight difference of opinion concerning the form or intensity of references to this “journey up the tree” as you put it. If my theory about the monosyllabic Sumerian being the founding language is correct, then we might hope to learn something of the first wisdom teachings.
I’m currently working on a difficult text that might shed more light on the above when it’s finished. I hope that will be some time next year.