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

Stability can only be attained by inactive matter.

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.

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.

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.

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

Life is not easy for any for us.