But to go deeper into the matter, I say, either you are a prince seeking by means of these fortresses to hold the people of your city in check; or you are a prince, or it may be a republic, desirous to control some city which you have gained in war. To the prince I would say, that, for the reasons already given, nothing can be more unserviceable than a fortress as a restraint upon your subjects, since it only makes you the readier to oppress them, and less scrupulous how you do so; while it is this very oppression which moves them to destroy you, and so kindles their hatred, that the fortress, which is the cause of all the mischief, is powerless to protect you. A wise and good prince, therefore, that he may continue good, and give no occasion or encouragement to his descendants to become evil, will never build a fortress, to the end that neither he nor they may ever be led to trust to it rather than to the good-will of their subjects. And if Francesco Sforza, who was accounted a wise ruler, on becoming Duke of Milan erected a fortress in that city, I say that herein he was unwise, and that the event has shown the building of this fortress to have been hurtful and not helpful to his heirs. For thinking that by its aid they could behave as badly as they liked to their citizens and subjects, and yet be secure, they refrained from no sort of violence or oppression, until, becoming beyond measure odious, they lost their State as soon as an enemy attacked it. Nor was this fortress, which in peace had occasioned them much hurt, any defence or of any service them in war. For had they being without it, through thoughtlessness, treated their subjects inhumanely, they must soon have discovered and withdrawn from their danger; and might, thereafter, with no other help than that of attached subjects, have withstood the attacks of the French far more successfully than they could with their fortress, but with subjects whom they had estranged.