"My husband and I were so closely united by our affection and our common work that we were not afraid of anything, even of the difficulties of a material existence."

"First principle: never to let one's self be beaten down by persons or by events."

"I would like to think that the discoveries we have made will one day prove to be of benefit to humanity."

"I never saw myself as a woman in science. I saw myself as a scientist. And I am proud of it."

"I have frequently been questioned, especially by women, of how I could reconcile family life with a scientific career. Well, it has not been easy."