Allowing some ugly technical language better avoided, here is how it is.

Assiyah is lifeworld, plain and simple. It naturally takes givens as given — Pshat mode of truth — and constructs systems from them. Pshat is one given ontology and objectivity — one naive realism — in which individual being, Nefesh, exists as an object among objects.

Yetzirah is hermeneutic disposition to take some things (perceived or conceived) as given, to be passively oblivious to others and to actively reject or suppress others that threaten the coherence of one’s overall conception of everything. It is the transcendental ordering of any Pshat givenness, and it is normally entirely in the background of everyday life, manifesting only as Ruach — individual (I) and cultural (We) identity and nonidentity (Them). Drash is a mode of truth that attends to this transcendental ordering of Pshat in the background of how we and others understand reality in some particular way — that is, to subject proper, the source of objectivity. Often, this attempt to understand a subject is approached in inadequate Pshat modes of object-comprehension, thus everting it and causing profound and consequential category mistakes.

Ruach-being receives reality as a given all-inclusive everything (a given universe or cosmos), articulated (jointed, partitioned) as every possible thing everything can comprise, material, ideal or otherwise. These articulations are the intelligible forms of that Ruach, including the self-form with which Nefesh identifies itself as a thing among things. Again, an embodied I, an embodied we, an I within we.

For Nefesh-being (animal soul) is the size of a living object who embodies it. Nefesh essentially embodies and constructs systems from givens.

Ruach-being (spirit) is the size of an entire everything as given to one subject. The everything is absolutely particular but relative to Ruach, it is universal, and the very universe itself.

Every subject proper is Ruach, whether personal subject, academic subject, a historical subject (a people). Any I or we to whom reality is given in some particular way and taken-together as some articulate everything of all possible things is Ruach.

Ruach is rarely unidimensional. It contains multitudes of subjects-within-subjects. Any I might understand autobiographically, professionally, politically, mathematically, fictionally, scientifically, legally, psychologically, ethically, ethnically, maybe religiously, etc., but all these various subjects attempt to harmonize into a single, coherent way of taking reality as given as real. This is not always easy, and never perfectly achieved. Self-integration, if attempted, is a lifelong effort. This is true for any individual I, and this is the stuff of biography. But for any We of the scale of community, whose life might span centuries or millennia, self-integration is the stuff of politics and history.

And it is all profoundly complicated by the reality of matter, which cooperates or resists and forces adaptation from unformed matter, from which material givens are substantiated.

Both metaphysical materialism and idealism are right but neither is nearly right enough. Reality is neither top-down immanence nor bottom-up emergence, but both and neither. We are suspended in the between, matter below, meaning above, each alike, the aether inside the square and radiating from the edges of the Chinese coin.

Enworldment is given, embodied reality — given by Ruach and taken by Nefesh, spontaneously recognizing material and ideal forms — taking them and responding to them as given, and from them constructing systems. Systems suggest new forms, forms suggest new systems. And sometimes the systems Nefesh constructs clash with every available articulate form without suggesting any new form. Systemic wholes stand alone without any support from above. And sometimes Ruach imposes its forms upon materials which cannot accommodate them. The forms cannot be actualized in any system. They are out-of-touch ideals with little or no practical value.

In rude moods, I have talked about this coming apart of the conceptive and constructive order as “bullshit and chickenshit” — the impracticable impositions of Ruach upon Nefesh being “bullshit”, and Nefesh’s soulless and dispiriting systematizing being “chickenshit”.

And it is this problem of interworld alienation that drives some of us through the roof of Nothingness itself, into Beriah, the inexhaustible, eternally pregnant source of reborn Ruach.