The commitment I have made is terrible and the plastic means appear and disappear at the moment of implementation. It's terrible... And the chaos of will? What law? It's terrible... Then I struggle with sculpture: I work, work and work and I don't know what I give. Is it interior? Is it exterior? Is it sensation? Is it delirium? Is it brain? Analysis? Synthesis? I don't know what the f... it is! Forms on forms.. confusion... The Cubists are wrong. Picasso is wrong. The academics are wrong. We're all a bunch of d.. heads.

In: an 2nd undated letter to Gino Severini (probably July or August 1912, or November); as quoted in Futurism, ed. Didier Ottinger; Centre Pompidou / 5 Continents Editions, Milan, 2008.