[Ettore Majorana and philosophy : Between elective affinities and philosophical reflections].

: This article seeks to "take on" Ettore Majorana by establishing his "philosophical profile." Doing so, one not only finds that the question of "fiction" was central to his work, but one also discovers the important superationalist - and European - dimension of his elective affinities with Giovanni Gentile Junior. Indeed their work was part of a constructive and inductive mathematism (Gaston Bachelard, later Robert Blanche) that was in opposition to classical geometricism (Emile Meyerson), and spiritualist Pythagoreanism (Arthur Eddington).