Da-Sein

Dasein (; German: [ˈdaːzaɪn]) is a term in the philosophy of Martin Heidegger. Adopted from the ordinary German word Dasein meaning "existence", Heidegger used it to refer to the mode of being that he believed is particular to human beings. A being that is aware of and must confront such issues as personhood, mortality, and the dilemma or paradox of living in relationship with other humans while being ultimately alone with oneself.