Alexander Fleming

I have been trying to find a substance that would kill bacteria without harming human cells. I have found it.

The mold was growing on a culture plate that had been left exposed to the air. It was a lucky accident.

The antibacterial substance produced by the mold was named penicillin.

Penicillin is a powerful antiseptic, but it is also harmless to human tissues.

The potential of penicillin as a therapeutic agent is enormous.

It is a remarkable fact that the mold produces a substance that is so effective against bacteria.

The discovery of penicillin was a turning point in the history of medicine.

I am not a great speaker, but I hope my work speaks for itself.

The greatest reward for a scientist is the knowledge that his work has benefited humanity.

The fight against infectious diseases is a never-ending battle.

We must always be vigilant against the emergence of new resistant strains of bacteria.

The future of medicine depends on our ability to develop new antibiotics.

The discovery of penicillin was a team effort, even if I was the one who first noticed the mold.

Science is a journey, not a destination.

The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...'

The true scientist is not interested in personal glory, but in the advancement of knowledge.

The greatest obstacle to discovery is not ignorance, but the illusion of knowledge.

I have no doubt that penicillin will save countless lives.

The world is a dangerous place, not because of those who do evil, but because of those who look on and do nothing.

The greatest discovery is to find something that you were not looking for.