"Piet Mondriaan, 1930 - Mondrian Composition II in Red, Blue, and Yellow" by Piet Mondrian - . Licensed under Public Domain via Commons - Wikipedia
at the very beginning of a new project on political aesthetics that at the moment concerns Truth, Beauty and the Good, with first steps into truth being made at seminars in Paris (INHA) and Oslo (Seminar of Aesthetics) trying out distinctions between truth to perception, to objects and to materials, the idea came along of
a further truth to feeling which might include (as it did for Kandinsky and Mondriaan as founders) truth to the Spirit as supra-personal subject of the cosmos. Abstraction abstracts from the perceptible its constituent elements – colour and form – in pursuit of an expression of truth pertaining to a human or super-human subject. Abstraction requires a subject to feel it. In one direction it tends towards truth to materials (Greenberg); in another it leads directly to the next part of the enquiry, beauty (where it will meet the concept from data visualisation of 'beautiful data')
Abstraction as formalism seems the least intimate, approximating to classicism (Apollonian). But consider the abstractions of spiritual arts - cathedrals, masks, groves, mosques. The anthropomorphic principle in natural religion meets the inhuman nature of gods, as of the one God as supreme abstraction. By removing the diligent approach to the extremely perceptible and enumerable world, abstract formalism can approach the noumenal, but in the guise of a subject who either is, is modelled on, or is marked by difference from the human.
The formal abstraction is close to the idea of symbol traced in the first iteration of Glitch as Labour: it is not a signifier locked into a system but a radical punctuation of semiotic structure by irruption from elsewhere (and in Beauty from else-when). Like a soul-catcher, formal abstraction arranges physical forces (masses, light) to attract divinity or other souls, to provide avenues to the noumenal beyond.
Truth to subject then because (1) it seeks out the truly immaterial (soul, self) (god, spirit) as a subject, capable of agency sufficient to complete the communication - an angelic bridge between subjects and the worlds they constitute as subjects; and (2) because the subjectivity evoked in the human maker and spectator/inhabitant is constructed in yearning for something more wonderful than all this stuff. Not therefore to be confused with the truth of science or perception (secular wonder) but of subjectivity extended to become the very principle of simultaneous inhabitance of this world and its (perfect) shadow or reflection
The form abstracted from ordinary perception is the form of the human, of the subject: and of the inhuman or otherwise-than-human, of the Subject.
Montage would fall under this description of formalist abstraction because it displaces unity into the perceiving subject on which it depends