remains indefinite, indeterminable; it then coincides for the most part with what is most fleeting and most unconsidered. However, what brings into accord is not nothing, but rather a concealing of beings as a whole. Precisely because letting-be always lets beings be in a particular comportment that relates to them and thus discloses them, it conceals beings as a whole. Letting-be is intrinsically at the same time a concealing. In the ek-sistent freedom of Da-sein a concealing of beings as a whole comes to pass [ereignet sich]. Here there is concealment.a


[89 {GA 9 193}] Concealment deprives ἀλήθεια of disclosure yet does not render it στέρησις (privation); rather, concealment preserves what is most proper to ἀλήθεια as its own. Considered with respect to truth as disclosedness, concealment is then un-disclosedness and accordingly the un-truth that is most proper to the essence of truth. The concealment of beings as a whole does not first show up subsequently as a consequence of the fact that knowledge of beings is always fragmentary. The concealment of beings as a whole, un-truth proper, is older than every openedness of this or that being. It is older even than letting-be itself, which in disclosing already holds concealed and comports itself toward concealing. What conserves letting-be in this relatedness to concealing? Nothing less than the concealing of what is concealed as a whole, of beings as such, i.e., the mystery; not a particular mystery regarding this or that, but rather the mystery - that, in general, mystery (the concealing of what is concealed) as such holds sway throughout the Da-sein of human beings.

In letting beings as a whole be, which discloses and at the same time conceals, it happens that concealing appears as what is first of all concealed. Insofar as it ek-sists, Da-sein conserves the first and broadest undisclosedness, un-truth proper. The proper non-essence of truth is the mystery. Here non-essence does not yet have the sense- of inferiority to essence in the sense of what is general (κοινόν, γένος), its possibilitas and the ground of its possibility. Non-essence is here what in such a sense would be a pre-essential essence. But "nonessence" means at first and for the most part the deformation of that already inferior essence. Indeed, in each of these significations the non-essence remains always in its own way essential to the essence and never becomes unessential in the sense of irrelevant. [90 {GA 9 194}] But to speak of nonessence and untruth in this manner goes very much

a First edition, 1943: Between 5 and 6, the leap into the turning (whose essence unfolds in the event of appropriation).


Martin Heidegger (GA 9) Pathmarks