Having studied the cases of « Felix », « Ilse », and « Willy », which illustrate the concepts of internal objects, unconscious fantasies and the feminine phase common to both sexes, the author deals with the case of « Fabien Especel » (aged 18). This adolescent is the hero of If I Were You…, Julien Green’s fantastic novel (1947), whose internal world Klein explored in « On Identification » (1955), almost « as though he were a real patient ». The normal and pathological aspects of projective identification are developed and deepened in « On Identification », through the « analysis  » of Fabien Especel.