It is curious to compare Ibn Khaldun with Edward Gibbon who in his History of the Decline and Fall of the Roman Empire {1776–88} presented that decline and fall as being due to barbarism and religion. By contrast, Ibn Khaldun presented barbarism and religion as the sources of empire, for, as we have seen, he believed that empires were regularly renewed by barbarian incursions and he believed that religion was a desirable supplement to 'asabiyya for tribal conquerors who aimed to conquer an old regime and set up a new one.
( Robert Irwin )
[ Ibn Khaldun: An Intellectual ]
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