El ser y la creación literaria refers to the exploration of existence and the act of literary creation, where authors reflect on their identity, the nature of reality, and the relationship between the self and the written word. This theme often raises questions about the boundaries between the author's consciousness and the narrative voice, highlighting the complexity of self-representation in literature. In Borges's works, especially 'Borges y yo', this concept is deeply intertwined with notions of duality and the subjective experience of reality.