It's always good to marry your best friend.
I was taught that the way of progress was neither swift nor easy.
In science we must be interested in things, not in persons.
There are sadistic scientists who hurry to hunt down errors instead of establishing the truth.
I never see what has been done; I only see what remains to be done.
It was like a new world opened to me, the world of science, which I was at last permitted to know in all liberty.