from Greek κοσμοπολίτης, "citizen of the world"
Cosmopolitanism and Kant (Yay!)
Appiah, Kwame Anthony. "Cosmopolitan Patriots". Critical Inquiry 23.3 (1997): 617-639. Web. 5 Feb. 2016.
↑ that's supposed to be Wikipedia but Chrome citation extensions are weird...
Because of his adventures out from Eriador, Bilbo learned from many cultures and his friends (excluding the Sackville-Baggins) came to see him as a cosmopolite.
The elves are regarded as cosmopolites because they were the first and eldest of the Children of Ilúvatar and are considered to be the fairest and wisest race of Arda.
"Citizens of the world"