Alexander Fleming

It is not enough to have a good idea, you must also be able to communicate it.

The greatest danger in science is to become complacent.

I have often been asked if I would do anything differently. My answer is always the same: 'I would try to be a bit more organized.'

The greatest discoveries are often made by those who are not looking for them.

It is a strange thing that the most important things in life are often the simplest.

I am not a philosopher, I am a scientist.

The greatest lesson I have learned in life is to never give up.

It is not the destination that matters, but the journey.

I have always believed that the best way to learn is by doing.

The greatest joy in life is to create something new.

It is a curious thing that the more you know, the more you realize how little you know.

I am not a hero, I am just a man who was lucky enough to make a discovery.

The greatest challenge in science is to ask the right questions.

It is not enough to be intelligent, one must also be wise.

The story of penicillin has a certain romantic interest, but it is not a romance in the ordinary sense of the word.

The thought of the suffering of humanity was always in my mind.

I have been trying to find something that would kill bacteria without hurting the body.

The mould was a lucky accident, but the discovery of penicillin was not.

My only merit is that I did not neglect the observation and that I followed up the subject as a bacteriologist.

The penicillin story has a moral. It is that the unexpected can be found if one is looking for it.