"In my sculpture, within the shape of today's world, I put the shape of the "ideal city" just as it was thought of by the artists of the Italian Renaissance. Like so many other citizens of the world, in this sculpture I lay my hopes and dreams." - Arnaldo Pomodoro
Sam Hunter (author of Arnaldo Pomodoro's monograph) said: "Sfera con Sfera is placed in front of the United Nations Building in a perfect way, since it reflects and links the antithetical impulses of the environmental context with its complex imaginative force, which can be read as organic, in a sense also human, or as technological for its internal forms so similar to a gear."