American writer Mark Twain first observed that America and England are "Two nations separated by a common language." Mr Twain was fond of such pithy observations, he referred to a game of golf as "A nice walk in the country, ruined."
I thought the Shaw one was "divided by a common tongue"?
Never mind. Twain would have said it if he'd thought of it....I always thought that he was quite right about the principle difference between men and dogs.
"England and America are two countries divided by a common language." - this was indeed by GB Shaw. However, this quote was made later than the publication date of Oscar Wilde's "The Canterville Ghost" (1882): "We have really everything in common with America nowadays except, of course, language."