The Niger is mentioned not as a setting for narrated events but as a geographical comparison that clarifies Sartre’s method of existential psychoanalysis. Its source stands for a truth one might search for without knowing in advance where it lies; by contrast, the meaning of human expressions is already prefigured in human comprehension and can be brought to light through interpretation.

The River as a Contrast

Sartre invokes the Niger alongside the Nile as an example of a source one may go looking for without any presentiment of its location. The comparison is deliberately limited: it illustrates what existential psychoanalysis is not. Its task is not an open-ended search for an entirely unknown truth, but the deciphering of meaning already available, in principle, to human understanding.

Place in the Method

The Niger’s brief appearance supports Sartre’s distinction between discovery and hermeneutic work. A gesture, word, or sign may be overlooked or dismissed, yet people possess an underlying comprehension of its revelatory value. Psychoanalysis helps bring that meaning into the open, determine what it discloses, and conceptualize it. The river therefore functions as a point of contrast within a methodological argument, not as a described landscape or a site of action.