In this paper it is proposed a semiotic revision of the aesthetic object known as The Artist’s Book. We tackle particularly one of its modalities of presence as an object: that which is manifested under the domain of Intervened Book. This intervention presumes a second degree creation in as much as it builds upon an industrially produced object. What interests us more about this “intervention” is that it sets into motion the mechanism that, in our perspective, exceeds the semiotic relationship between signifier and significance, in other words, the semiosis, to place itself beside the significance chain proposed by Jaques Lacan in his characterization of the unconscious. The aesthetic object produced this way is a signifier that inserts itself into a chain of signifiers that are evoked, one after another, without reaching a stable meaning for any of these in the course of the chain. The aesthetic experience, in any case, turns out to be the process in itself, ever diverse, every time different. In this case, we have found useful Lucien Levy-Bruhl’s Participation Principle and its conscious implementation by the writer Julio Cortazar.