I don’t think that I was wrong exactly at the time I made the decision. I thought about it and I think correctly that it was very dangerous if the Nazis got it. There was, however, I think, an error in my thought in that after the Germans were defeated–that was much later, three or four years later–we were working very hard. I didn’t stop; I didn’t even consider that the motive for originally doing it was no longer there.
