It was necessary then for Moses to find the people of Israel slaves in Egypt, and oppressed by the Egyptians, so that to escape from that bondage they resolved to follow him. It was necessary that Romulus should not have been kept in Alba, and that he should have been exposed at his birth, for him to have become the founder and king of Rome. And so it was necessary for Cyrus to find the Persians dissatisfied with the rule of the Medes, and the Medes effeminate and enfeebled by long peace. And finally, Theseus could not have manifested his courage had he not found the Athenians dispersed. These opportunities therefore made these men fortunate, and it was their lofty virtue that enabled them to recognize the opportunities by which their countries were made illustrious and most happy. Those who by similar noble conduct become princes acquire their principalities with difficulty, but maintain them with ease; and the difficulties which they experience in acquiring their principalities arise in part from the new ordinances and customs which they are obliged to introduce for the purpose of founding their state and their own security. We must bear in mind, then, that there is nothing more difficult and dangerous, or more doubtful of success, than an attempt to introduce a new order of things in any state. For the innovator has for enemies all those who derived advantages from the old order of things, whilst those who expect to be benefited by the new institutions will be but lukewarm defenders. This indifference arises in part from fear of their adversaries who were favored by the existing laws, and partly from the incredulity of men who have no faith in anything new that is not the result of well-established experience. Hence it is that, whenever the opponents of the new order of things have the opportunity to attack it, they will do it with the zeal of partisans, whilst the others defend it but feebly, so that it is dangerous to rely upon the latter.