Scientist Quotes and aphorisms about were Marie Curie Marie Curie Marie Curie Marie Curie ,, All my mind was centered on my studies, which, especially at the beginning, were difficult. In fact... Marie Curie ,, During the year 1894, Pierre Curie wrote me letters that seem to me admirable in their form. No one... Marie Curie Carl Sagan Carl Sagan Carl Sagan Galileo Galilei