Epic Castoriadis run-on sentence

Currently reading Castoriadis’ The Imaginary Institution of Society. The man likes his run-on sentences, as evidenced below. Semi-colons do little to mitigate the sense of being overwhelmed by the piling-up of explications.

The image is therefore a symbol here — but of what? In order to know, one must enter the labyrinths of the symbolic elaboration of the imaginary in the unconscious. What is at the end of it? Something that is not there to represent something else; something that is instead the operative condition for every subsequent representation, but that already itself exists in the mode of representation: the fundamental phantasy of the subject, his or her nuclear (and not ‘primitive’) scene, where that which constitutes the subject in his or her singularity exists; the organizing-organized schema that provides its own image and exists not in symbolization but in the imaginary presentification that is already for the subject an embodied and operative signification, the initial grasp and the first, overall constitution of an articulated, relational system positing, separating and uniting the ‘inside’ and the ‘outside’, the sketch of gesture and the sketch of perception, the division into archetypal roles and the originary ascription of a role to the subject as such, positive and negative valuation, the source of subsequent symbolic significance, the origin of privileged and specific investments of the subject, something at once structuring and structured.