"Many people believe that the crimes of the Nazi regime were so great as to stand outside history. This is a troubling echo of Hitler’s own belief that will triumphs over facts. Others maintain that the crimes of Stalin, though horrible, were justified by the need to create or defend a modern state. This recalls Stalin’s view that history has only one course, which he understood, and which legitimates his policies in retrospect. Without a history built and defended upon an entirely different foundation, we will find that Hitler and Stalin continue to define their own works for us."
January 1, 1970
https://en.wikiquote.org/wiki/History