Heidegger's emphasis on phenomenology as the analytic description of intentionality in its apriori determines the task of phenomenology as that of inquiring into the being of that entity which constitutes itself and, in so doing, also constitutes reality. In Heidegger's terminology this entity is known as Dasein, and what characterizes Dasein is existence.
Øverenget, E. (1998). Existence, in Seeing the self, Dordrecht, Kluwer, pp. 105-138.
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