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

It's always good to marry your best friend.

I am one of those who think like Nobel, that humanity will draw more good than evil from new discoveries.

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.

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.

Each of us must work for his own improvement, and at the same time share a general responsibility for all humanity.