| dc.description.abstract | This dissertation investigates the relationships that can be traced between some selected points from Heidegger's work and others selected from Freudian and Lacanian psychoanalysis. Due to the vastness of Heidegger's theoretical production, the dissertation focuses on points raised in Ernildo Stein's work, where the possible proximity of the philosopher's work with psychoanalysis at certain points will be detailed. We will show that Heidegger's criticisms of Freudian theories and even of psychoanalytic methodology stem from a certain lack of knowledge on the part of the philosopher that Freud is dealing with the phenomenon of the analytic setting, which imposes itself as the fundamental element of psychoanalysis. We argue that the Heideggerian construct Dasein incorporates a new way of thinking about man and his world. The concept of being-in-the-world reworks the position of the human being, consequently modifying the concepts of psyche, psychology and consciousness. This will give greater support to Freud's
important work of questioning the limits of the concepts of pure and sovereign logic. We propose that there will be a meeting of both authors who wander through different paths. Freud questions the primacy of logic and its limitations, by proposing the functioning of the logic of the unconscious. Heidegger, from the other extreme, departs for a critical reformulation of this psyche and consciousness, starting from a rigorous philosophical work, where he diligently pores over the thinking of several philosophers. Focus on one point: the Dasein construct. In the second chapter, I discuss the relationship between Heidegger's work and Jacques Lacan's work. Lacan's quest to make a return to the Freudian thing makes him embark on the paths of philosophy, bringing together several
important authors to be able to work more deeply in the psychoanalytic field. We
follow in the footsteps of Lacan in his seminar The Logic of the Phantasm, where
he argues that Freud not only criticizes a certain position of prevalence of the
rational logic of human functioning, but that Freud proposes a new conception of
a logic that works in a different way. differentiated from rational logic: the logic of
the unconscious. The logical structure characterized as the sexual relationship will be the
keynote to demonstrate the originality of psychoanalytic thinking in the field of
logic. We will discover with Lacan that this structure cannot be summarized in the
simple sexual act, but involves the logical complexity produced in the binomial of
sexual difference - and which is neglected in the conceptualizations that Aristotle
established about logic. The understanding of inter-human relationships must
necessarily go through the logical structure of sexual differentiation: this is the
unprecedented hypothesis introduced by Freud and totally based on the ethics of
the therapeutic treatment of psychopathologies. This field of formal logic will also
be critically questioned with the way that the Dasein construct problematizes this
interrelation of our existence in the world, the being-in-the-world. Lacan and
Heidegger open an unknown and forgotten field since the establishment of the
foundations of logic by Aristotle in which the present work seeks to shed a simple
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