"I am convinced that Germany has drawn conclusions [from World War II] and Europe has drawn conclusions as well. And I can say an unpopular thing. If once again Germany should risk destabilizing Europe, then there would be no division of Germany — it would simply be blown off the map of Europe. With the kind of technology that exists, with the kind of experiences we have had, there can be no other way — and the Germans know it."
January 1, 1970
https://en.wikiquote.org/wiki/Lech_Wa%C5%82%C4%99sa