“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.”

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

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

We must keep our certainty that after the bad days the good times will come again.

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

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

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.

You will find that one special love that you know is right but for some reason just doesn’t last.

Be less curious about people and more curious about ideas.

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

You cannot hope to build a better world without improving the individuals.

Life is not easy for any for us.

I am among those who think that science has great beauty.

It is my earnest desire that some of you should carry on this scientific work and keep for your ambition the determination to make a permanent contribution to science.

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

More and more, I feel the need for a house and a garden.

All that I saw and learned was a new delight to me.