2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/54006A story on how an attempt to realize W. Heizenberg idea that the neutrino might be a Goldstone particle had led in its development to the discovery of supergravity action.(Talk presented at the International Conference on the History of Original Ideas and Basic Discoveries in Particle Physics, Erice, Italy July 29 -- August 4, 1994), 15 pages, LATEXHigh Energy Physics - Theorytext