"I'm not satisfied with the progress of the work, but I am happy that the talks are going on. It might have a negative effect if the United States joins"
"In my case Pilgrim's Progress consisted in my having to climb down a thousand ladders until I could reach out my hand to the little clod of earth that I am"
"I was married to Margaret Joan Howe in 1940. Although not a scientist herself she has contributed more to my work than anyone else by providing a peaceful and happy home"