In German,
Dasein is the vernacular term for "existence". It is derived from
da-sein, which literally means "being-there" or "there-being". In a philosophical context, it was first used by
Leibniz and
Wolff in the 17th century, as well as by
Kant and
Hegel in the 18th and 19th; however, Heidegger's later association of the word with human existence was uncommon and not of special philosophical significance during this period. Dasein for Heidegger is a mode of being involved with and caring for the immediate world in which one lives, while always remaining aware of the contingent element of that involvement, of the priority of the world to the self, and of the evolving nature of the self itself. In harmony with
Nietzsche's critique of the
subject, as something definable in terms of consciousness, Heidegger distinguished Dasein from consciousness in order to emphasize the way that "Being" shapes our entire understanding and interpretation of the world. "This entity which each of us is himself...we shall denote by the term 'Dasein (Heidegger, trans. 1927/1962, p.27). "[Dasein is] that entity which in its Being has this very Being as an issue..." (Heidegger, trans. 1927/1962, p.68). that Dasein is always a being engaged in the world: neither a subject, nor the objective world alone, but the coherence of
being-in-the-world. This ontological basis of Heidegger's work thus opposes the Cartesian "abstract agent" in favour of practical engagement with one's environment. Dasein is revealed by projection into, and engagement with, a personal world a never-ending process of involvement with the world as mediated through the projects of the self.
Authentic choice means turning away from the collective world of Them, to face Dasein, one's individuality, one's own limited life-span, one's own being. Heidegger thus intended the concept of Dasein to provide a stepping stone in the questioning of what it means to
be to have one's own being, one's own death, one's own truth. Heidegger also saw the question of Dasein as extending beyond the realms disclosed by positive science or in the history of
metaphysics. "Scientific research is not the only manner of Being which this entity can have, nor is it the one which lies closest. Moreover, Dasein itself has a special distinctiveness as compared with other entities; [...] it is ontically distinguished by the fact that, in its very Being, that Being is an issue for it."
Being and Time stressed the ontological difference between entities and the being
of entities: "Being is always the Being of an entity." Establishing this difference is the general motif running through
Being and Time. Some scholars disagree with this interpretation, however, arguing that for Heidegger Dasein denoted a structured awareness or an institutional "way of life". Others in turn suggested that Heidegger's early insistence on the ontological priority of Dasein was muted in his post-war writings. == Origin and inspiration ==