Oh, how about just a grazing glance 'o the good 'ole Thelema?
A recent web meander had me confronted with the word 'tarot' for the first time in seeming ages, bringing to mind a time I trudged many miles on campus in the dead of winter from my dorms to an obscure occult bookstore on the other side of town (it being the only place in town I imagined possibly carrying what seemed to be edgy reading material at the time), and wound up with a so-called "Crowley deck" featuring tarot-related depictions by Aleister Crowley (https://en.wikipedia.org/wiki/Aleister_Crowley), whose name I believe I first encountered during Gurdjieff/Ouspensky investigations in late high school.
(I became aware of Gurdjieff/Ouspensky thanks to a high school friend's father, a "Fourth Way" aficionado quite adept at delivering sermons on such themes while drinking vodka disguised in milk.)
(Oh dang.. I felt like I was going a lot longer with this when I first began, but interruptions on the home front blanched the initial motivation plain right out of me....)
(But wait a second... she's become busy with her screen... oooh... oooh!... wait for it...)
I do miss feeling there was something to the various forms of mysticism I investigated in earlier times. But we're such information stills, doncha know, so of *course* the ongoing campaigns/challenges to keep babies whilst jettisoning bath water.
The insight that stands out most from it all is that discussing such with others is possibly the height of futility for the amount of conceptual coherence required. People are generally unaware of how private their meanings of/for words are - especially words stretched to attempt to map The Ineffable.
That said, I keep imagining - aka wanting to believe - the phrase "all mental is illness" *must* have the power to pierce the conceptuality bubble of individuality....
'Thelema' in the your title caught my attention. A.O. Spare, Phil Hine, other names, echoes from related studies in a previous personal era. A practice that actually works can barely have an adequate linguistic expression.
Words upon words, about other words.
Even something as simple to describe as a regular meditation practice, the description won't tell you the texture and edges of really getting into the thing.
Conceptual futility indeed. Somehow, we can still find the way however dimly illuminated.
I relate to this. Used to study a lot of chaos related stuff when younger. Now I just try to breathe well, and that soothes me.
A lot of attempts to sketch out meanings in a way that can reach another person end up having to be poetry. Most people are not confident enough to attempt the necessary poetry, since it's such a risk. On the other hand, it's so rewarding when it does come right and you see what someone else meant underneath their language and you can reach the concepts -- maybe they're not maps of the Ineffable, but shadows of it?
How else do you get the same semantic meaning on different wetware or hardware? Ship as source code! That's why traditions are passed down as rituals, or as specific instructions for meditation. Those are the equivalent of source in an imperative language. THOU SHALT. Music is a true human universal - everyone has the same reaction to the same pieces, in type if not in intensity. It's closer to the "native" data format, but because it's lower bandwidth than language or a visual medium, it can't pass on instructions as precisely. Call it assembly language.
come out, come out
rare-ever you are