"Systems... resemble the similar parts or muscles of a body natural. By systemes; I understand any numbers of men joyned in one Interest, or one Businesse. Of which, some are Regular, and some Irregular. Regular are those, where one Man, or Assembly of men, is constituted Representative of the whole number. All other are Irregular. Of Systemes subordinate, some are Politicall, and some Private. Politicall (otherwise Called Bodies Politique, and Persons In Law,) are those, which are made by authority from the Soveraign Power of the Common-wealth. Private, are those, which are constituted by Subjects amongst themselves, or by authoritie from a stranger. For no authority derived from forraign power, within the Dominion of another, is Publique there, but Private. And of Private Systemes, some are Lawfull; some Unlawfull: Lawfull, are those which are allowed by the Common-wealth: all other are Unlawfull. Irregular Systemes, are those which having no Representative, consist only in concourse of People; which if not forbidden by the Common-wealth, nor made on evill designe, (such as are conflux of People to markets, or shews, or any other harmelesse end,) are Lawfull. But when the Intention is evill, or (if the number be considerable) unknown, they are Unlawfull. ... And this is all I shall say concerning Systemes, and Assemblyes of People, which may be compared (as I said,) to the Similar parts of mans Body; such as be Lawfull, to the Muscles; such as are Unlawfull, to Wens, Biles, and Apostemes, engendred by the unnaturall conflux of evill humours."