It is not easy to see how the more extreme forms of nationalism can long survive when men have seen the Earth in its true perspective as a single small globe against the stars. – Arthur C. Clarke

A mans country is not a certain area of land, of mountains, rivers, and woods, but it is a principle and patriotism is loyalty to that principle. – George William Curtis

Patriotism has served, at different times, as widely different ends as a razor, which ought to be used in keeping your face clean and yet may be used to cut your own throat or that of an innocent person. – Charles Edward Montague

I am not an Athenian or a Greek, but a citizen of the world. – Diogenes