Heidegger writes in Letter on Humanism:
Language is the House of Being. In its home human beings dwell.
And then later:
the widely and rapidly devastation of language not only undermines aesthetic and moral responsibility in every use of language; it arises from a threat to the essence of humanity.
What 'devastation' is he referring to; and is it even now ongoing? What is the nature of the 'threat'?
In part this seems to be answered by:
much bemoaned of late, and much too lately, the decline of language is, not the grounds for, but already a consequence of, the state of affairs, in which language under the dominance of the modern metaphysics of subjectivity almost irremediably falls out of its element.
But what are the 'modern metaphysics of subjectivity'? Freud and Jung? Psycholinguistics?
And how does this entail:
Instead,language surrenders itself to our mere willing and trafficking as an instrument of domination over beings.
We encounter beings in a business and calculative fashion, but also scientifically and by way of philosophy, with explanations and proof. Even the inexplicable belongs to these explanations and proofs. By such statements we believe we confront the mystery.
This is clear enough; but:
But if the human being is to find his way once again into the nearness of Being he must first learn to exist in the nameless.
Is this 'nameless' not named by a name, as such; and nor by explanations or proofs?