Cosanti is reached through Doubletree Ranch Road, which is perpendicular to Tatum Boulevard, one of the wealthiest areas of Phoenix. Nothing seems to indicate what is going to be visited but a few bells that greet us with its song generated by a slow imperceptible breeze. Before the interview, Jeff Stein, president of the Cosanti Foundation, welcomes us and, playing cicerone, guides us through concrete domes. Halfway through the tour, we stop to see how molten bronze is poured into molds to manufacture bells. The interview with Paolo Soleri takes place in this frame, in a small cottage attached to these constructions, on a June morning barely a year before this visionary architect died at 93...