Sentence:  The "outward form" of such system, is a grand "classification" of all things; whose details consist in the realization that "simple", yet nevertheless "wonderful <WSD>shelfwork</WSD>" (or categories), "innately" but undevelopedly "inherent" in the human mind, whereby ALL MEN of "normal" parts, are enabled, by a proper course of "culture", to become "knowing", "wise", and "useful for themselves" and "others". 
Meaning of the word marked with <WSD> tags:  A system of classification, especially one that determines how something can be organized on shelves.