In addition to Phireʼs comment: “HEISENBERG: I would say that I was absolutely convinced of the possibility of our making a uranium engine but I never thought t

In addition to Phireʼs comment: “HEISENBERG: I would say that I was absolutely convinced of the possibility of our making a uranium engine but I never thought that we would make a bomb and at the bottom of my heart I was really glad that it was to be an engine and not a bomb. I must admit that.” (Transcript of Surreptitiously Taped Conversations among German Nuclear Physicists at Farm Hall. August 6-7, 1945. <http://germanhistorydocs.ghi-dc.org/pdf/eng/English101.pdf http://germanhistorydocs.ghi-dc.org/pdf/eng/English101.pdf>)