After all, science is essentially international, and it is only through lack of the historical sense that national qualities have been attributed to it.

If it takes a hundred years, it will be a pity, but I will not cease to work for it as long as I live.

I was taught that the way of progress was neither swift nor easy.

My husband and I were so closely united by our affection and our common work that we passed nearly all of our time together.

I have the best husband one could dream of; I could never have imagined finding one like him. He is a true gift of heaven, and the more we live together the more we love each other.

Be less curious about people and more curious about ideas.

Pierre Curie voluntarily exposed his arm to the action of radium for several hours. This resulted in damage resembling a burn that developed progressively and required several months to heal. Henri Becquerel had by accident a similar burn as a result of carrying in his vest pocket a glass tube containing radium salt. He came to tell us of this evil effect of radium, exclaiming in a manner at once delighted and annoyed: "I love it, but I owe it a grudge."