A very fine lecture at Gardone, by our Director of Music, David Hughes, contained this wonderful anecdote, which I suspect must date from the end of World War I.
A French train, full of German prisoners of war being sent home from France, stopped at a railway station on the border. By chance, simultaneously, a German train, full of French prisoners of war being returned to France, stopped at the same station.
Feelings were still raw and passions were high and some jostling began among the two groups of repatriated servicemen.
Then ... somebody ... intoned, using the ancient, universally known melody, the phrase Credo in unum Deum.
Within a few moments, the entire station was ringing with this glorious affirmation of Catholicism, of supra-national unity and identity.
Couldn't happen nowadays, could it, and you know why.