Radium is not to enrich any one. It is an element; it is for all people.

The sensitive plate, the gas which is ionised, the fluorescent screen, are in reality receivers, into another kind of energy, chemical energy, ionic energy... luminous energy.

Be less curious about people and more curious about ideas.

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

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

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.

Life is not easy for any for us.