The dissertation Listening to language: Heidegger and Pessoa seeks, as the title suggests, to bring Martin Heidegger s philosophical thinking closer to Fernando Pessoa s poetic language on the quest of an original language. We seek to develop a study that has, as its premise, the thought left by the thinker-poet unfolding in the language of the poet-thinker. From the shadow of this inapparent relationship, we envision a path that unveils the interweaving of the various strands of the writing of one and the poetry of the other in the thinking of the poetic construction of an original language, understood from a founding experience of language. It is a saying that makes it appear, a place where the word is the principle of reality, an appearing that in its immediacy becomes original language, becomes poetics of language, the place of saying. Both philosopher and poet make us understand that our being in the world is totally permeated by an experience of meaning, in which we are always inserted. On this, something happens from a vital imperative: man disappears, there is only surrender, abandonment to the dimension of transcendence, there is only waiting and listening unfolding in openness, so as to give vent to the other who summons to the consecration of the instant.