Of the Several Kinds of Commonwealth by Institution, and of Succession to the Sovereign Power
The difference of commonwealths consisteth in the difference of the sovereign, or the person representative of all and every one of the multitude. And because the sovereignty is either in one man, or in an assembly of more than one; and into that assembly either every man hath right to enter, or not everyone, but certain men distinguished from the rest; it is manifest, there can be but three kinds of commonwealth. For the representative must needs be one man, or more: and if more, then it is the assembly of all, or but of a part. When the representative is one man, then is the commonwealth a “monarchy”: when an assembly of all that will come together, then it is a “democracy,” or popular commonwealth: when an assembly of a part only, then it is called an “aristocracy.” Other kind of commonwealth there can be none: for either one or more, or all, must have the sovereign power, which I have shown to be indivisible, entire.