Regarding the common English form,
You can take the boy out of the country, but you can't take the country out of the boy...
(Meaning - "This boy remains a bucolic rube even though he moved from his origins.")
Does anyone have any real, solid examples of early use of this phrase?
For non-native readers, it is used widely in English in different variations. (So, if you are disparaging relaxed Californians, it would be ".. California", etc.) I do not know if "boy / country" was the first use, but it feels like it.
Please, it's easy to google on the net low-quality crap about the origin of this phrase. If you are new to this site, quoting a crap, unsourced, website is not an answer, thanks!!
Note that the earliest actual, real, usage example anyone has so far is
It would be great to find an earlier usage example.