Noun
citizen of the world (plural citizens of the world)
A person regarded as part of the global citizenry; specifically, one who takes the view that they belong to no particular country or state.
I am not an Athenian, nor a Greek, but a citizen of the world. Socrates
Asked where he came from, he said, "I am a citizen of the world." Diogenes of Sinope
I have no country to fight for; my country is the earth; I am a citizen of the world. Eugene V. Debs
Asked from what country he came, he replied, "I am a citizen of the world." Diogenes Laërtius
Socrates said he was not an Athenian or a Greek, but a citizen of the world. Plutarch
If my theory of relativity is proven successful, Germany will claim me as a German and France will declare that I am a citizen of the world. Should my theory prove untrue, France will say that I am a German and Germany will declare that I am a Jew. Albert Einstein