Book I, Chapter IX

Again, things are well and at their best with every son when he follows, so far as by his proper nature he can, the footsteps of a perfect father. Mankind is the son of heaven, which is most perfect in all its works; for it is "man and the sun which produce man," according to the second book on Natural Learning.¹ The human race, therefore, is at its best when it imitates the movements of heaven, so far as human nature allows. And since the whole heaven is regulated with one motion, to wit, that of the primum mobile, and by one mover, who is God, in all its parts, movements, and movers (and this human reason readily seizes from science); therefore, if our argument be correct, the human race is at its best state when, both in its movements, and in regard to those who move it, it is regulated by a single Prince, as by the single movement of heaven, and by one law, as by the single motion. Therefore it is evidently necessary for the welfare of the world for there to be a Monarchy, or single Princedom, which men call the Empire. And this thought did Boethius breathe when he said: "Oh happy race of men, if your hearts are ruled by the love which rules the heaven."²