In most poetic expressions of patriotism, it is impossible to distinguish what is one of the greatest human virtues from the worst human vice, collective egotism. The virtue of patriotism has been extolled most loudly and publicly by nations that are in the process of conquering others, by the Roman, for example, in the first century B.C., the French in the 1790s, the English in the nineteenth century, and the Germans in the first half of the twentieth. To such people, love of one's country involves denying the right of others, of the Gauls, the Italians, the Indians, the Poles, to love theirs.

Wystan Hugh Auden
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