The Private Heisenberg and the Absent Bomb

When they were separated by Heisenberg’s scientific travels or the war itself, Elisabeth and Werner exchanged more than three hundred letters that survived the fighting. Both later wrote accounts of the war years, but their letters, filled with the worries and hopes of ordinary family life, offer a quieter, more intimate picture of the years when Heisenberg ran the program that was going nowhere. Husband and wife both knew that the German secret police were free to open and read their letters at will, and tried to avoid dangerous ground. By Thomas Powers.

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