Alexander Fleming — "The greatest tragedy is the misuse of a good thing."

"When I woke up just after dawn on September 28, 1928, I certainly didn't plan to revolutionize all medicine by discovering the world's first antibiotic, or bacteria killer. But I suppose that was exac…"

"We must be careful not to create a race of penicillin-resistant superbugs."

"The thoughtless person playing with penicillin treatment is morally responsible for the death of the man who succumbs to infection with the penicillin-resistant organism."

"Penicillin sat on my bench for ten years while I was called a quack."

"It is remarkable how easily the public can be misled by sensational statements."