Summary Chapter I: The Kinds of Principalities and the Means by Which They Are Acquired
Machiavelli describes the different kinds of states, arguing that all states are either republics or principalities. Principalities can be divided into hereditary principalities and new principalities. New principalities are either completely new or new appendages to existing states. By fortune or strength, a prince can acquire a new principality with his own army or with the arms of others.
Summary Chapter II: Hereditary Principalities
Chapter II is the first of three chapters focusing on methods to govern and maintain principalities. Machiavelli dismisses any discussion of republics, explaining that he has "discussed them at length on another occasion"a reference to Book 1 of his Discourses.
Machiavelli notes that it is easier to govern a hereditary state than a new principality for two main reasons. First, those under the rule of such states are familiar with the prince's family and are therefore accustomed to their rule. The natural prince only has to keep past institutions intact, while adapting these institutions to current events. Second, the natural disposition of subjects in a hereditary state is to love the ruling family, unless the prince commits some horrible act against his people. Even if a strong outsider succeeds in conquering a prince's hereditary state, any setback the outsider encounters will allow the prince to reconquer the state.
Summary Chapter III: Mixed Principalities
Machiavelli explains why maintaining a new principality is more difficult than maintaining a hereditary state. In the first place, people will willingly trade one recently arrived ruler for another, hoping that a new ruler will be better than the present one. This expectation of improvement will induce people to take up arms against any relatively unestablished prince. Although the people may quickly realize that their revolt is ineffective,