Martin Heidegger
/ˈhʌɪˌdɛɡə
/ (1889–1976), German philosopher. In Being and Time (1927) he examined the ontology of Being, in particular human existence as involvement with a world of objects (Dasein). His writings on Angst (dread) as a fundamental part of human consciousness due to radical freedom of choice and awareness of death had a strong influence on existentialist philosophers such as Sartre.