Alexander Fleming

The fight against disease is a never-ending battle.

The future of medicine depends on our ability to adapt and innovate.

It is not the strongest of the species that survives, nor the most intelligent that survives. It is the one that is most adaptable to change.

The discovery of penicillin was a triumph of the scientific method, even if it began with an accident.

The greatest lesson I have learned is to keep an open mind and to be prepared for the unexpected.

The more you look, the more you see.

The true scientist is driven by curiosity, not by fame or fortune.

The path of discovery is rarely straight.

We must always be vigilant against the misuse of powerful drugs.

The human body is a marvel of complexity, and we are only beginning to understand its secrets.

I have found a substance which kills many microbes and is non-toxic to animals. It may be useful.

I have been trying to find a substance which would be lethal to microbes but harmless to the body. I think I have found it.

The story of penicillin has a certain romantic appeal, but it is not a fairy tale.

I am not a genius. I am just a man who is curious.

It is a curious thing that the more one looks at a thing, the more one sees in it.

I have often been asked how I came to discover penicillin. The answer is simple: I was looking for something else.

The mould was growing on a culture plate that had been contaminated by a spore from the air. It was a lucky accident.

I have no doubt that penicillin will be a great boon to mankind, but it is not a panacea.

It is a great satisfaction to know that one's work has been of some use to humanity.

The world is full of wonders, and the greatest wonder of all is life itself.