" [I]n the name ‘being-in-the-world,’ ‘world’ does not in any way imply earthly as opposed to heavenly being, nor the ‘worldly’ as opposed to the ‘spiritual.’ For us ‘world’ does not at all signify beings or any realm of beings but the openness of Being. Man is, and is man, insofar as he is the ek-sisting one. He stands out into the openness of Being. Being itself, which as the throw has projected the essence of man into ‘care,’ is as this openness. Thrown in such fashion, man stands ‘in’ the openness of Being. ‘World’ is the clearing of Being into which man stands out on the basis of his thrown essence. ‘Being-in-the-world’ designates the essence of ek-sistence with regard to the cleared dimension out of which the ‘ek-’ of ek-sistence essentially unfolds. Thought in terms of ek-sistence, ‘world’ is in a certain sense precisely ‘the beyond’ within existence and for it. Man is never first and foremost man on the hither side of the world, as a ‘subject,’ whether this is taken as ‘I’ or ‘We.’ Nor is he ever simply a mere subject which always simultaneously is related to objects, so that his essence lies in the subject-object relation. Rather, before all this, man in his essence is ek-sistent into the openness of Being, into the open region that clears the ‘between’ within which a ‘relation’ of subject to object can ‘be "

― Martin Heidegger ,