Life is not easy for any of us. But what of that? We must have perseverance and above all confidence in ourselves. We must believe that we are gifted for something and that this thing must be attained.

Nothing in life is to be feared, it is only to be understood. Now is the time to understand more, so that we may fear less.

Be less curious about people and more curious about ideas.

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.

All my life through, the new sights of Nature made me rejoice like a child.

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

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.

One never notices what has been done; one can only see what remains to be done.

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

In science, we must be interested in things, not in persons.

I have no dress except the one I wear every day. If you are going to be kind enough to give me one, please let it be practical and dark so that I can put it on afterwards to go to the laboratory.

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