Here is something for medieval philosophy aficionado's : the Prologue of St Thomas De Ente et Essentia, in which we can experience the way of reasoning about ontological issues and the leading role of Logic. Logic was considered to presuppose a metaphysics, and thus reflecting the metaphysical structure of things, but only IF we abstract from all those aspects of Logic that are solely the product of our way of thinking.
St Thomas was well aware of that.
Since this is only an intermezzo, "non-latin" readers can happily skip it, or read the translation. It's just so nice to experience the flavor of medieval thinking about the fascinating and all encompassing theory of Being.

Quia parvus error in principio magnus est in fine secundum Philosophum in I Caeli et mundi, ens autem et essentia sunt quae primo intellectu concipiuntur, ut dicit Avicenna in principio suae Methaphisicae, ideo ne ex eorum ignorantia errare contingat, ad horum difficultatem aperiendam dicendum est quid nomine essentiae et entis significetur, et quomodo in diversis inveniatur, et quomodo se habeat ad intentiones logicas, scilicet genus, speciem et differentiam.
Quia vero ex compositis simplicium cognitionem accipere debemus et ex posterioribus in priora devenire, ut a facilioribus incipientes convenientior fiat disciplina, ideo ex significatione entis ad significationem essentiae procedendum est.