The relationship of psychoanalysis with philosophy must consider Freud’s own rejection of any attempt to reduce psychology to the knowledge of the phenomena of consciousness, which he early and insistently linked to the idealistic notion of “worldview” (Weltanschauung). However, a meticulous follow-up of the main philosophical trends that occurred in their context shows the true place of privilege that corresponds to philosophical thought in the face of the identity configuration of psychoanalysis as a discipline (and of its object of study: the unconscious), with its own epistemological framework that draws on the ideological confluence that scientist neopositivism established with Schopenhauer’s philosophy.