Leviathan (Hobbes book)
Types

The difference between these three kinds of Commonwealth consisteth not in the difference of power, but in the difference of convenience or aptitude to produce the peace and security of the people; for which end they were instituted. And to compare monarchy with the other two, we may observe: first, that whosoever beareth the person of the people, or is one of that assembly that bears it, beareth also his own natural person. And though he be careful in his politic person to procure the common interest, yet he is more, or no less, careful to procure the private good of himself, his family, kindred and friends; and for the most part, if the public interest chance to cross the private, he prefers the private: for the passions of men are commonly more potent than their reason. From whence it follows that where the public and private interest are most closely united, there is the public most advanced. Now in monarchy the private interest is the same with the public. The riches, power, and honour of a monarch arise only from the riches, strength, and reputation of his subjects. For no king can be rich, nor glorious, nor secure, whose subjects are either poor, or contemptible, or too weak through want, or dissension, to maintain a war against their enemies; whereas in a democracy, or aristocracy, the public prosperity confers not so much to the private fortune of one that is corrupt, or ambitious, as doth many times a perfidious advice, a treacherous action, or a civil war.
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