This paper presents a paragraph of my thesis whose guiding thread is the theme of language in Heidegger, and which advances two basic claims: 1) Being and Time is an unfinished book and it is thus in the understanding of the planetary achievement of “nihilism” – i.e., of “technique” – that this work from 1927 assumes its whole meaning; and 2) that said, Heidegger’s work, taken as a whole, is a cohesive work that aims at overcoming “nihilism” understood originarily as (...) “forgetfulness of being”. This overcoming is therefore achieved in two stages: 1) the understanding of the phenomenon of “being” arising from the transcendental understanding of the “world”; and 2) the overcoming of that transcendental understanding of the “world” in the full understanding of the phenomenon of “being” as “history,” a process in which the dialogue with poetry will prove to be decisive. This paper emphasizes one aspect of that evolution of Heidegger’s thought “in dialogue with Heidegger,” showing how the understanding of “Ereignis” allows us to conciliate the understanding of the concept of “Entschlossenheit,” presented in Being and Time, with the concept of “Gelassenheit,” that is central in the second stage of Heidegger’s work. (shrink)