The Interpretation of the Lawes of Nature, in a Common-wealth, dependeth not on the books of Morall Philosophy. The Authority of writers, without the Authority of the Common-wealth, maketh not their opinions Law, be they never so true. That which I have written in this Treatise, concerning the Morall Vertues, and of their necessity, for the procuring, and maintaining peace, though it bee evident Truth, is not therefore presently Law; but because in all Common-wealths in the world, it is part of the Civill Law: For though it be naturally reasonable; yet it is by the Soveraigne Power that it is Law: Otherwise, it were a great errour, to call the Lawes of Nature unwritten Law; whereof wee see so many volumes published, and in them so many contradictions of one another, and of themselves.