I tried out various experiments described in treatises on physics and chemistry, and the results were sometimes unexpected. At times, I would be encouraged by a little unhoped-for success; at others, I would be in the deepest despair because of accidents and failures resulting from my inexperience.
During the course of my research, I had had occasion to examine not only simple compounds, salts and oxides, but also a great number of minerals.
During the year 1894, Pierre Curie wrote me letters that seem to me admirable in their form. No one of them was very long, for he had the habit of concise expression, but all were written in a spirit of sincerity and with an evident anxiety to make the one he desired as a companion know him as he was.
Each of us must work for his own improvement, and at the same time share a general responsibility for all humanity.
In science, we must be interested in things, not in persons.
I met Pierre Curie for the first time in the spring of the year 1894... A Polish physicist whom I knew, and who was a great admirer of Pierre Curie, one day invited us together to spend the evening with himself and his wife.