It is a favourite exercise of Villani and other historians to trace the troubles and revolutions in the state of Florence to chance quarrels between noble families, arising from an angry word or a broken troth. Here, they tell, was sown the seed of the Guelf and Ghibeline wars in Florence; and here that of the feuds of Black and White. Such quarrels and party names were symptoms and nothing more. The enduring source of trouble was the presence within the city of a powerful idle class, constantly eager to recover the privilege it had lost, and to secure itself by every available means, including that of outside help, in the possession of what it still retained; which chafed against the curbs put upon its lawlessness, and whose ambitions were all opposed to the general interest. The citizens, for their part, had nothing better to hope for than that Italy should be left to the Italians, Florence to the Florentines. On the occasion of the celebrated Buondelmonti feud (1215), some of the nobles definitely went over to the side of the people, either because they judged it likely to win in the long-run, or impelled unconsciously by the forces that in every society divide ambitious men into two camps, and in one form or another develop party strife. They who made a profession of popular sympathy did it with a view of using rather than of helping the people at large. Both of the noble parties held the same end in sight--control of the Commonwealth; and this would be worth the more the fewer there were to share it. The faction irreconcilable with the Republic on any terms included many of the oldest and proudest houses. Their hope lay in the advent of a strong Emperor, who should depute to them his rights over the money-getting, low-born crowd. II.