Alexander Fleming

It is the constant, quiet worker who is often the real discoverer.

I have been lucky, but remember, luck only comes to those who are prepared.

The most important thing is to be curious, and the next is to be patient.

In science, the credit goes to the man who convinces the world, not to the man to whom the idea first occurs.

A discovery is like falling in love; it comes when you least expect it.

The war did more than anything else to speed the development of penicillin.

Without the work of Florey and Chain, my discovery would have been of little use.

I have no head for business. I am a scientist.

The world was ready for an antibiotic. The time was ripe.

One must have the courage to pursue a hunch.

The simplest explanation is often that you have made a mistake, but sometimes it is that you have made a discovery.

I never made a penny out of penicillin. It would be indecent to make money out of a thing like that.