"The accidental contamination of my cultures by a mold was not an unusual event in a bacteriological laboratory. What was unusual was my decision to investigate the mold."

"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…"

"I never sought fame or fortune, only to contribute to human knowledge."

"It is the lone worker who makes the first advance in a subject; the details may be worked out by a team, but the prime idea is due to enterprise, thought, and perception of an individual."

"The greatest discovery of my life was not penicillin, but the fact that I was wrong about something."