The historians' history of the world in twenty-five volumes… (1905)
“ The reign of Roger II was one of vigour, of success, and of internal tranquillity. He rendered tributary the Mohammedan tyrants of Tripoli and Tunis, built fortresses, churches, and monasteries, and administered justice with unparalleled severity, in regard not only to the poor, but to his haughty barons. The feudal system which had long before been introduced into Naples, he perfected; and extended its observance to Sicily, which had hitherto followed the policy of the Greeks and Saracens. By this revolution, the free colonists were at once transformed into vassals ”
