Always gets you into trouble. Look at poor old Boris Johnson. He was trying to explain, I imagine in a lighthearted way, that the past 2,000 years of European history have been marked by repeated attempts to unify the continent under a single government.
“Napoleon, Hitler, various people tried this out, and it ends tragically. The EU is an attempt to do this by different methods.”
Suddenly the whole world and his father are in a state of extreme apoplexy. Why?
Clearly it was the Hitler thing (no one seemed at all fussed about Napoleon). And, yes, Hitler was actually trying to create a Greater Germany.
Plus ca change.