To be able to keep silent, Dasein must have something to say—that is, it must have at its disposal an authentic and rich disclosedness of itself.
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Being and Time
Listening to... is Dasein's existential way of Being-open as Being-with for Others. Indeed, hearing constitutes the primary and authentic way in which Dasein is open for its ownmost potentiality-for-Being—as in hearing the voice of the friend whom every Dasein carries with it. Dasein hears, because…
It requires a very artificial and complicated frame of mind to 'hear' a 'pure noise'. The fact that motor-cycles and waggons are what we proximally hear is the phenomenal evidence that in every case Dasein, as Being-in-the-world, already dwells alongside what is ready-to-hand within-the-world; it ce…
But how are we to determine what is said in the talk that belongs to this kind of discourse? What does the conscience call to him to whom it appeals? Taken strictly, nothing. The call asserts nothing, gives no information about world-events, has nothing to tell. Least of all does it try to set going…
Vocal utterance… is not essential for discourse, and therefore not for the call either; this must not be overlooked.
That which is ontically closest and well known, is ontologically the farthest and not known at all; and its ontological signification is constantly overlooked.