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

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

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

We must have perseverance and above all confidence in ourselves.

It's always good to marry your best friend.

We must not forget that when radium was discovered no one knew that it would prove useful in hospitals.

Now is the time to understand more, so we fear less.