The Prince by Niccolo Machiavelli Chapter 20 Page 1

Whether Fortresses, and Certain Other Expedients to Which Princes Often Have Recourse, are Profitable or Hurtful

To govern more securely some Princes have disarmed their subjects, others have kept the towns subject to them divided by factions; some have fostered hostility against themselves, others have sought to gain over those who at the beginning of their reign were looked on with suspicion; some have built fortresses, others have dismantled and destroyed them; and though no definite judgment can be pronounced respecting any of these methods, without regard to the special circumstances of the State to which it is proposed to apply them, I shall nevertheless speak of them in as comprehensive a way as the nature of the subject will admit.

It has never chanced that any new Prince