And he knew it --- at the end of his life he ruefully reflected on the difference between being lucky enough to receive a Nobel prize and on being a true genius.
Ernst Chain : "True genius consists of being lucky --- TWICE"
Remember that when you ask yourself how it was that a dying doctor and a chemist who could barely be understood in English, working in a small lab between 1940-1944, could do so much to improve our whole world with their pioneering efforts with the penicillin molecule.