Abstract

In this paper, aligning with the focus international researchers have dedicated to Heidegger's major works in order to contribute to the elucidation of his teachings, our intention is to establish a hypothesis grounded in Heidegger's secondary literature spanning his first, second, and third periods of thought. This will be accomplished through an examination of his speeches, presentations, lectures, correspondences, notes, interviews, and the like. Thus, the hypothesis of this paper is aimed at demonstrating that Heidegger's body of work does not constitute a static and definitive delineation of philosophy that commences and concludes in a prescribed manner: instead, it represents a contemplation of the concept of philosophy throughout his entire oeuvre, achieved by engaging in the discourse of philosophy, problematizing metaphysics, and scrutinizing ontology. In this vein, this essay delves into Heidegger's understanding of the relationship between philosophy and metaphysics during his first period of thought, his comprehension of the problem of metaphysics in his second period of thought, and his interpretation of the interplay between ontology and theology/teologics in his third period of thought. The ultimate objective is to shed light on Heidegger's methodology, which underpins both his initial phenomenology and subsequent thought: the method of posing questions. Specifically, the act of questioning has led to a critique of the obscuring of the ontological difference between Sein and Dasein, a critique that delivers an essential disruption to philosophical thought. Consequently, this underscores the necessity of establishing the foundations for the task of thinking.