Why are there beings at all instead of nothing? That is the question. Presumably it is not arbitrary question, "Why are there beings at all instead of nothing"- this is obviously the first of all questions. Of course it is not the first question in the chronological sense [...] And yet, we are each touched once, maybe even every now and then, by the concealed power of this question, without properly grasping what is happening to us. In great despair, for example, when all weight tends to dwindle away from things and the sense of things grows dark, the question looms.
Martin HeideggerTo think Being itself explicitly requires disregarding Being to the extent that it is only grounded and interpreted in terms of beings and for beings as their ground, as in all metaphysics.
Martin HeideggerThe senses do not enable us to cognize any entity in its Being; they merely serve to announce the ways in which 'external' Things within-the-world are useful or harmful for human creatures encumbered with bodies....they tell us nothing about entities in their Being.
Martin Heidegger