"A good many people think that I deserve some credit for the discovery of penicillin. They are wrong. It was discovered by nature."

"The public will not understand the dangers of using penicillin indiscriminately."

"The purification of penicillin was a major triumph of chemistry."

"The discovery of penicillin was a series of lucky accidents."

"Penicillin cures, but wine makes people happy."