Through Ion, the rhapsodic protagonist of the homonymous platonic dialogue, the book investigates the act of interpreting and the figure of the intermediary or "middle ring" which in the writings of the Athenian philosopher plays an important cognitive, metaphysical and pedagogical function.

From the priestess Diatima di Mantinea to the Aspasia master, from the soldier Er, the divine nuncio, the Socratic daimon, Plato to his students, from philosophers to sophists such as Gorgia and Protagora, from poets like Homer to guitars and rhapsodies like Ion, Intermediary, more or less credible, links two different worlds and seeks to bridge the gap in the synthesis of revealing interpretation, which does not always, however, succeed.

His failure puts in motion short-circuits, produces alterations of sense, interrupts or renders the process of transmitting knowledge and truth digressive and erratic. And Plato, who cares for the integrity and authenticity of the original message, wonders: who can trust us? Who deserves to teach? Who is the inspiration, the messenger? And, above all, what is the source of his inspiration and his legitimacy? Interpreters are so many - a lineage - but who really is worthy and worthy of talking, discussing, reporting?

One of the nods of contemporary epistemological debate (the relationship between human language and truth) is dealt with with interpretative boldness and with a very rare narrative in studies on Plato and - non-secondary - with a pleasant, fun, lightness.