The eccentricity generally understood both in the literal sense (a term borrowed from astronomy and geometry) and in the symbolic meaning (the eccentricity as aesthetic category), is a key concept that energizes and defines the Gerard de Nerval's act of writing, his mind and soul, not only in Les Illuminés, but also in his entire work. Basically, it is constitutive of the act of literary creation of Nerval, and it determinates and activates the author's mind, his actions and behaviors, reasons and madness, doubts and certainties, creeds and aspirations. The eccentricity as metaphor in Nerval 's writing catalyses themes, profound ideas and movements, given that the metaphor is not simply rhetorical, but the engine of the generation and meaning regeneration. Therefore, our contribution is the proposal of a new dimension of eccentricity research, namelv the analvsis of this concept as a tool for studv. The goal is not, of course, to nrovide a comprehensive approach to the eccentricity, respectively, the eccentric, and that because these notions overcomes the linguistic field. Instead of conceptualizing terms, we focus instead on the operating mechanism of these notions, referring simultaneously to the notion of center and outside the center. The notions of eccentricity, respectively of eccentric cannot be conceived in an absolute way, as objects made once and for all, which is why the analysis oftheir meanings require to open a wider field of research that cannot abandon the ideological content, historical, philosophical,religious and literary of the nineteenth century, in which these concepts are born and grow rich.
