Careful Words

citizen (n.)

Diogenes, when asked from what country he came, replied, "I am a citizen of the world."—Diogenes Laertius.

  Socrates said he was not an Athenian or a Greek, but a citizen of the world.

Plutarch (46(?)-120(?) a d): Of Banishment.

  Asked from what country he came, he replied, "I am a citizen of the world."

Diogenes Laertius (Circa 200 a d): Diogenes. vi.