Just as people are born, live a time, and die by diseases or old age, in the same way republics are formed, flower a few centuries, and perish finally by the audacity of a citizen, or by the weapons of their enemies. All has their period; all empires, and largest monarchies even, have only so much time: the republics feel continually that this time will arrive, and they look at any too-powerful family as the carriers of a disease which will give them the blow of death.