The older one gets, the more one feels that the present must be enjoyed; it is a precious gift, comparable to a state of grace

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

We must have perseverance and above all confidence in ourselves.

It was like a new world opened to me, the world of science, which I was at last permitted to know in all liberty.

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

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.

You cannot hope to build a better world without improving the individuals. To that end each of us must work for our own improvement, and at the same time share a genaral responsibility for all humanity, our particular duty being to aid those to whom we think can be most useful.