Occhialini Scientific Life -- The Arcetri School of Physics -- Giuseppe Occhialini and the history of cosmic-ray physics in the 1930s: From Florence to Cambridge -- Occhialini’s trajectory in Latin America -- Occhialini’s scientific production between the two English periods -- Occhialini’s contribution to the discovery of the pion. An interview by L. Gariboldi -- Occhialini and the Università Libre de Bruxelles. An interview by L. Gariboldi -- Elementary-particle physics at the University of Milan 1951–1956 -- Giuseppe Occhialini in Milan in the sixties and beyond: His legacy for particle physics and his influence on young researchers and students -- Giuseppe Occhialini and CERN -- 1960–1970: Milano and Gruppo Spazio -- La Collaboration Milano-Saclay-Palermo -- Beppo Occhialini and the birth of Space Physics in Italy and in Europe: Personal memories -- An Italian school of high-energy astrophysics: A personal view from the sixties to Beppo-SAX -- Beppo and space research in Italy -- Brief summary of the LFCTR/IFCTR history -- Present Day Perspectives in Research Fields Pioneered by Occhialini -- Are diamonds for ever, or do protons decay? A tale of the unexpected -- Present appeal in pion decay studies and applications -- On the origin of cosmic-ray electrons -- Perspectives of high-energy astrophysics -- Personal Reminiscences -- Personal remembrances -- Working with Beppo: Personal recollections -- G. P. S. Occhialini: One of my masters -- G. P. S. Occhialini vu par un de ses amis -- Early cosmic-ray experiments on ESRO satellites — Some memories of via Celoria -- Beppo Memoire. Space in late’ 60s Milan -- Beppo and the road to INTEGRAL.