When I spotted this article today from the BBC, I almost couldn't/wouldn't believe it.
All these men in this blog's title living within miles of each other at the same time?
In the same city?
One hundred years ago today?
And get this, many of them dined or had coffee at the same place: Cafe Landtmann in downtown Vienna.
Imagine that - Trotsky and Hitler sitting a table away from each other at the Cafe Central. Freud and Tito at two corner tables, as well.
Stalin and Hitler within feet of one another.
Oh, and Archduke Franz Ferdinand's home was not too far from Stalin's residence; with Hitler's home just across the river from Freud's place.
All living together prior to history's pages dictating their names to the world - and thereby introducing them to one another.
If you are a history buff, you'll enjoy the article.
Take heed today...
Lest the world finds out a hundred years from now who that person is sitting across from you in Starbucks - Ha!
"The Viennese intellectual community was actually quite small and everyone knew each other and... that provided for exchanges across cultural frontiers."
This, he adds, would favour political dissidents and those on the run.
"You didn't have a tremendously powerful central state. It was perhaps a little bit sloppy. If you wanted to find a place to hide out in Europe where you could meet lots of other interesting people then Vienna would be a good place to do it."
Freud's favourite haunt, the Cafe Landtmann, still stands on the Ring, the renowned boulevard which surrounds the city's historic Innere Stadt.
Trotsky and Hitler frequented Cafe Central, just a few minutes' stroll away, where cakes, newspapers, chess and, above all, talk, were the patrons' passions.
"Part of what made the cafes so important was that 'everyone' went," says MacNamee. "So there was a cross-fertilisation across disciplines and interests, in fact boundaries that later became so rigid in western thought were very fluid."