Up until now, nearly all the debate on Brexit has focused on what it means for the UK. But the real significance of Brexit may be what it means for the EU. 

“If you believe you’re a citizen of the world, you’re a citizen of nowhere. You don’t understand what the very word ‘citizenship’ means.”

Those were the key words of a speech by Prime Minister Theresa May of Britain, at the Conservative Party conference in Birmingham last week. My response — as a fully paid-up member of the rootless cosmopolitan class — was: Ooh la la!

Welcome to the new class war, Brexit edition.

On one side, the citizens of the world — the Weltbürger — who are only citizens in the sense that Orson Welles’s Citizen Kane was a citizen. We have at least two passports. We speak at least three languages. And we have at least four homes, not one of them in the town where we were born.