"I have been fortunate in my life to have seen the benefits of my discovery."

"I found penicillin and have given it free for the benefit of humanity. Why should it become a profit-making monopoly of manufacturers in another country?"

"I certainly did not plan to revolutionise all medicine by discovering the world's first antibiotic, or killer of bacteria. But I suppose that is exactly what I did."

"I am sometimes asked what I think of the future of penicillin. I think it has a great future, but it must be used wisely."

"It is a happy accident that the mold grew on my plate, but it was not an accident that I recognized it."