Life is not easy for any of us. But what of that? We must have perseverance and above all confidence in ourselves.

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."

A scientist in his laboratory is not a mere technician: he is also a child confronting natural phenomena that impress him as though they were fairy tales.

Nothing in this world is to be feared... only understood.

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 was taught the method for advancement is not quick or simple.

There are sadistic scientists who hurry to hunt down errors instead of establishing the truth.