The Potsdam Denkschrift is a declaration of Hans-Peter Dürr, J. Daniel Dahm and Rudolf zur Lippe under the patronage of the Federation of German Scientists-VDW. It is the base – the “mother” of the abstract condensed version, the Potsdam Manifesto ‚We have to learn to think in a new way’ what was up to now signed by more than 130 scientists and personalities from all over the world. Both were presented to the public in Berlin in autumn 2005.