The mortal sin of presumption is a Roman Catholic doctrine which essentially holds that to arrogantly believe and trust in one’s own merits to the exclusion of any divine intercession can lead to salvation is the road to perdition.
Whether or not Americans accept that religious teaching, vainly presuming the United States will exist indefinitely, that we as a country are immune to forces which can effect our dissolution, that we are impervious to external and internal threats, is not only presumptuous but reflects a dangerous ignorance of the history of all great nations and empires.
Those nations and empires have had an average life-span of two centuries. As of 2012, the U.S.A. will be 223 years old.
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