And thus it comes to pass

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that though there are very many and great nations over the earth.

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whose rite and customs, speech , arms and dress are distinguished by marked differences,

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yet there are no more than two kinds of human society which we may justly call two cities, according to the language of our scriptures.

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The one

consists of those who wish to live after the flesh

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the other

of those who wish to live after the spirit;"

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St Augustine, "City of God"