Dwelling on freedom as a keeping oneself out of the reach of being and keeping oneself immune to its action in a beyond a nothingness, Sartre points to anguish as the recognition of a possibility as its possibility and identification of the rupture in relation to its essence by nothingness. In this way, anguishing oneself in front of oneself is what imposes itself on freedom in a movement that encloses nothingness as "why", being the recognition by the human existent of a possibility as its possibility. Since anguish consists in the reflexive capture of freedom by itself, the being emerges "as" anguish "being-anguish" in order to escape from anguish, as Sartre argues, who points out the original act through which the existing human being is for itself its own nothingness as that which imposes itself on discovery in absolute immanence as pure subjectivity of the instantaneous cogito in a process that encloses the question involving consciousness and its modus essendi as its foundation which makes it possible for the human existent to appear in the world as the being that is its own nothingness and as the being through which nothingness comes into the world. Thus, in view of Sartre's theoretical-conceptual construction as the encounter with oneself in the future and the possibility of not finding oneself, to the extent that it points out a being for whom in one's own being the awareness of the nothingness of one's being between bad faith and lies is imposed, Prof. Luiz Carlos Mariano Da Rosa, In line with the hermeneutic-phenomenological ontological-existential principle, he stresses that, if we are-anguish-to-escape-from-it in the unity of the same consciousness, the possibility of bad faith implies the need for the unity of being and nonbeing, that is, being-for-non-being, converging towards the identification of consciousness through a definition that is not circumscribed by the boundaries of a being for which its being is imposed in its own being, while this being implies another being that does not concomitantly remaining under the aegis of a being for whom in his own being the consciousness of the nothingness of his being is imposed. Key-words: Jean-Paul Sartre. Anguish. Freedom. Nothing. Bad faith.