The present document analyzes the figurations and the meaning of the concept of eternity in the work of Jorge Luis Borges. In the first chapter, it points out the main borgesian symbols linked to the concept (the word, the nothing, the I, the animals, etc.); in the second chapter, the main refutations of time, found in the author´s essays; in the third and last chapter, it examines in what way the concept of eternity is related to the writer´s process of literary creation and to his very concept of literature. Such analysis means to offer a new approach towards the argentine author´s work, emphasizing, behind his obsession with labyrinths, enigmas and with the problem of time, his search for the center, or for the solution of the enigma of time, seen, through literary art, in the concept of eternity. Apart from that, it wishes to analyze the ambiguous relation the author maintained with the concept of eternity, seeing it at times as a dream that man should abandon to be part of the real world and, at other times, as an impossible goal that, only through literature, could have any meaning to men.