He was given the Nobel Prize in 1945 in recognition, and in an interview shortly after, this is what he said: "The thoughtless person playing with penicillin treatment is morally responsible for the death of a man who succumbs to infection with a pencillin-resistant organism."
Za priznanje je 1945. godine dobio Nobelovu nagradu, a u intervjuu koji je nedugo potom dao, evo što je izjavio: "Bezumna osoba koja se  igra terapijom penicilinom moralno je odgovorna za smrt čovjeka koji podlegne infekciji uzrokovanom organizmom koji je rezistentan na penicilin."