In Sein und Zeit, the Dasein, thrown in the world by Geworfenheit and relaunched by Entwurf (projection) into the future, experiences itself as a “Self”. This exercise of existence cannot escape the critique of solipsism. However, paragraph 29 — about the existentiale of Befindlichkeit — opens an access way to the Other, which later will be ceaselessly explored by Heidegger, after having found the Stimmungen of the Greek beginning in Holderlin’s poetry and the Grund Stimmungen of “the night of the gods” and of the forgetfulness of being of our time. Not until the fifties and the mystical experience of the fourfold (das Geviert) will Heidegger find the possibility of transmuting the experience of the Other from a πόλεμος into a being-in-harmony (stimmen). This unique path of affectivity, asserted in paragraph 29 of Sein und Zeit, will enable Heidegger to reach an essential way of working out the question of Otherness, that only right now we may be starting to understand.