La objeción de Ernst Mach a la línea de horizonte (de eventos) is the first solo exhibition at NORDÉS of the artist Rubén Ramos Balsa (Santiago de Compostela, 1978; resident in Singapore) where he presents for the first time a small part of the Librario which is, in his own words, his most important and extensive vital project, also the most personal and intimate.

The Librario is defined "as boxes and suitcases with objects and books". It is a project where the artist keeps his constant research work active and, in a general way, deals with different themes from the privileged approach that allows the dual vision of art and science. El Librario is a project between the literary and the sculptural, between the graphic and the geometric.

The central theme and motif of this exhibition, also the reason for the creation of the Librario as a research structure, is the discovery of the Senegalese Oumar Haidara Fall, with whom he has been collaborating since 2006.

This exhibition shows his last four works in photographic format accompanied by other earlier works that the author has selected as a link to the thematic continuity of his work: unity, repetition and symmetry. With them he creates a visual narrative in dialogue with his new series of drawings, through which he proposes the guiding line of the theme of the exhibition. A poetic relationship is built between images and drawings, defined through titles elaborated over the years, which are for the artist the main material for the ideation of his work and the foundational basis of the Librario.

The deep conceptual relationships between art and science that Rubén Ramos usually shows, appear in the works of this exhibition defined in what he declares as his only intellectual objective: To demonstrate the validity and relevance of Ernst Mach's objection to the demonstration of Archimedes' Law of the Lever; equating, from a historical perspective, the generality of the Law of the Lever to what Euclid's Fifth Postulate meant for science, that is, an axiom of apparent evidence, demonstrable through facts, but whose revision and refutation allowed scientific knowledge to open up to a new understanding of space.

As the artist states, the Librario project is essentially a postal project, a communication between two points, because, according to the artist, intelligence -as well as communication- can only be understood as something that occurs between two brains, since reducing it to the endogenous idea of a single thinking mind leads us to irresolvable paradoxes from which our culture must detach itself.

In this sense, the exhibition serves to present to the public the dialogue established between the Spanish artist and the Senegalese scientist, but also, through the work shown, the fruit of that work is conveyed as a communiqué in the form of open letters to some of his teachers and intellectual references; as we can see explicitly in the main piece of the exhibition. A suitcase convertible into a piece of furniture that serves both as a shelf for the object contained inside -the artifact invented by Oumar Haidara- and as a sideboard for a video projection, which broadcasts the public video letters dedicated, in this case, to Esther Ferrer and Juan Fernando de Laiglesia.

Finally, a suitcase-box with 64 mini books, dedicated and in homage to his former professor and Professor of Sculpture at the University of Vigo mentioned above, Juan Fernando Laiglesia, is exhibited.