Ontology, Authenticity, Freedom, and Truth in Heidegger’s and Sartre’s Philosophy

Heidegger and Sartre developed the projects of their fundamental ontologies within the framework of the phenomenological approach. The traditional view of reality is based on dualistic oppositions of ideal and material, spirit and body, reality and possibility, and visibility and essence. It is phenomenology that enables elimination of the above-mentioned dualisms and restoration of the world’s ontological unity on a reliable foundation. Though Sartre’s existentialism was exposed to criticism both from right, and from the left intellectuals, and is not a “fashionable” current at present, and the fundamental ontology of Heidegger was estimated by Levinas as ontology of the power subject-centred line, nevertheless the author considers that attention which is paid in these concepts to such phenomena as the voice of conscience, care and freedom represents the most urgent philosophical value nowadays; the author in this regard points to insufficient validity of modern criticism of approaches of Heidegger and Sartre, in particular–reproaches in a subject-centred line from adherents of “ontology of the Other”.