First, I will examine the so-called phenomenological Destruktion of medieval ontology, a basic component of the method of the history of ontology. In this section I put forth some questions regarding the appropriation of the Middle Ages by late scholasticism, which supposed itself the apex of preceding reflections. Secondly, I present Heidegger's own reflections on medieval ontology as presented in his course of the summer semester of 1927 ("The fundamental problems of phenomenology") taught at the University of Marburg. In this part I also make some critical reflections on Heidegger's reading of the medieval philosophers, which lends itself more to understanding Heidegger's way of thinking than that of the medievals themselves (i.e. as read in their historical and cultural context). Without spiritual élan, consubstantial with the writings of Thomas Aquinas, for example, would not the conceptual organization of Aquinas' system seem rather grandiose and dry? Would not this have been Heidegger's understanding, which was the result of a methodological separation made between medieval mysticism and Scholastic philosophy ever since his undelivered course entitled "Philosophical Foundations of Medieval Mysticism" (1918-1919)?
Middle Ages; Metaphysics; Ontology; Phenomenology; Destruction