I will attempt translation: "There exist specific Ideas (Platonic sense), which may become some text and then some concrete book, which have a structure consis

I will attempt translation: "There exist specific Ideas (Platonic sense), which may become some text and then some concrete book, which have a structure consisting in a "development", made of "successions" and "directions": such ideas can be brought from "indetermination" to some decided form through a sequence of signs that follow (in the concrete plane) the said same structure (in the ideal plane)". Not exactly the most insightful of insights, to my interpretation. It could work as a premise. Only: where did you find such quotation? It is not in the submitted page as I received it.