And thus farre concerning the Constitution, Nature, and Right of Soveraigns; and concerning the Duty of Subjects, derived from the Principles of Naturall Reason. And now, considering how different this Doctrine is, from the Practise of the greatest part of the world, especially of these Western parts, that have received their Morall learning from Rome, and Athens; and how much depth of Morall Philosophy is required, in them that have the Administration of the Soveraign Power; I am at the point of believing this my labour, as uselesse, and the Common-wealth of Plato; For he also is of opinion that it is impossible for the disorders of State, and change of Governments by Civill Warre, ever to be taken away, till Soveraigns be Philosophers. But when I consider again, that the Science of Naturall Justice, is the onely Science necessary for Soveraigns, and their principall Ministers; and that they need not be charged with the Sciences Mathematicall, (as by Plato they are,) further, than by good Lawes to encourage men to the study of them; and that neither Plato, nor any other Philosopher hitherto, hath put into order, and sufficiently, or probably proved all the Theoremes of Morall doctrine, that men may learn thereby, both how to govern, and how to obey; I recover some hope, that one time or other, this writing of mine, may fall into the hands of a Soveraign, who will consider it himselfe, (for it is short, and I think clear,) without the help of any interested, or envious Interpreter; and by the exercise of entire Soveraignty, in protecting the Publique teaching of it, convert this Truth of Speculation, into the Utility of Practice.