A postulate derived from a reading of Schopenhauer

Substance, causality, that-which-is, can be represented from two sides- as abstract object for a perceiving subject, who projects the a priori forms of time and space onto it; that is, from the side of existence, the posited existence of substance, matter, causality; and, represented from the side of existence, matter extends infinitely (or into infinity) for a perceiving subject into an infinite past and future, and through an infinite present moment; or then as a non-object, perceived by no perceiving subject, not subject to the a priori formal imposition of time and space; that is, from the side of pure subsistence, the posited pure subsistence of subtance, matter, causality; and represented from an imagination of pure subsistence, matter takes on a "void form," as self-subsistent, or as an unimaginable void, subsistence within a void state; or as merely subsistent matter; so that matter, substance, causality, without a subject's imposition, both is and is not, must be and must not be.