Well? Feel free to mention not only the *most* important, but also others that you consider noteworthy. In fact, I thought about making this multiple-choice, but decided against it.
Note that for the sake of this discussion, I do not consider inventors scientists, unless of course they invented in a scientific manner. Philosophers aren't (necessarily) scientists either, but mathematicians are.
Also, what's in parentheses is obviously not the scientists' only scientific contributions (although they are IMO the most important ones), nor were they necessarily discovered/theorized/whatever by that particular person alone. And don't only consider what's in the parentheses; consider all that person has done for scientific progress.
Links to biographies of the people in the poll, if you're interested:
Isaac Newton
Albert Einstein
Louis Pasteur
Galileo Galilei
Euclid
Charles Darwin
Nicolaus Copernicus
Antony van Leeuwenhoek
Werner Heisenberg
René Descartes
William Harvey
Ernest Rutherford
Gregor Mendel
Niels Bohr
Sigmund Freud
Enrico Fermi
Francis Bacon
John Nash
James Clerk Maxwell
Note that for the sake of this discussion, I do not consider inventors scientists, unless of course they invented in a scientific manner. Philosophers aren't (necessarily) scientists either, but mathematicians are.
Also, what's in parentheses is obviously not the scientists' only scientific contributions (although they are IMO the most important ones), nor were they necessarily discovered/theorized/whatever by that particular person alone. And don't only consider what's in the parentheses; consider all that person has done for scientific progress.
Links to biographies of the people in the poll, if you're interested:
Isaac Newton
Albert Einstein
Louis Pasteur
Galileo Galilei
Euclid
Charles Darwin
Nicolaus Copernicus
Antony van Leeuwenhoek
Werner Heisenberg
René Descartes
William Harvey
Ernest Rutherford
Gregor Mendel
Niels Bohr
Sigmund Freud
Enrico Fermi
Francis Bacon
John Nash
James Clerk Maxwell