If not for me, the H-bomb would have been developed in Russia first. In the U.S., we'd now be speaking Russian.

I think that intellectuals who end up in hell will have to read page proofs and check indexes there.

Life improves slowly and goes wrong fast, and only catastrophe is clearly visible.

Physics is, hopefully, simple. Physicists are not.

My experience has been in a short 77 years that in the end when you fight for a desperate cause and have good reasons to fight, you usually win.

Physics without mathematics is meaningless.

Had we not pursued the hydrogen bomb, there is a very real threat that we would now all be speaking Russian. I have no regrets.