Valentini chose to work with clay, which is both substance and place, identifying in it the material of memory. Using this material, he found the capacity to respond, with a cycle of destruction and creation, to the need for signs to appear and dissolve, to be reborn at any moment.
The artist, who had an unsual ability to express himself through writing, described the origins and reasons behind his art: “The material and expressive technique I have favored is that of ceramics, specifically terracotta. As stone ties the tower to its environment, becoming itself manifestation and rhythm of the site, so too my goal is for clay to become a trace and manifestation of a continuum. [...] 
