Prisioners looking at projected images and calling them reality. The allegorical speech crosses the time and is a constant presence at different moments of the cultural history. This work aims to analyze the points of touch and distance between the Plato s cave and José Saramago Blindness. In this paper we analyze the possible relationship between allegories, supported by the similarities between literature, history and philosophy. I m interested in revealing how the authors appropriate the allegorical feature and nearby references to build the sense of their thoughts. The work makes use of reference proposed by Wolfgang Iser, through its pretending acts, the definitions of allegory proposed by João Adolfo Hansen and Flavius Kothe, and converses with the work of Luiz Costa Lima. In Plato, besides the allegory, it examines the question of the simulacrum proposed by Gilles Deleuze and how it is assumed the allegorical speech in a theory which aims to neutralize the words dubiety. In Saramago, analyze how the Marxist view of ideology appears in the situations narrated by the author. Finally, we show that the points set out in Blindness admits the possibility of a hermeneutic allegory of Plato s cave.