Monarchia (I, ix, 1-3)

(1) Item, bene et optime se habet omnis filius cum vestigia perfecti patris, in quantum propria natura permictit, ymitatur. Humanum genus filius est celi, quod est perfectissimum in omni opere suo: generat enim homo hominem et sol, iuxta secundum De naturali auditu. Ergo optime se habet humanum genus cum vestigia celi, in quantum propria natura permictit, ymitatur. (1) Again, every son is in a good (indeed, ideal) state when he follows in the footsteps of a perfect father, insofar as his own nature allows. Mankind is the son of heaven, which is quite perfect in all its workings; for man and the sun generate man, as we read in the second book of the Physics. Therefore mankind is in its ideal state when it follows the footsteps of heaven, insofar as its nature allows.
(2) Et cum celum totum unico motu, scilicet Primi Mobilis, et ab unico motore, qui Deus est, reguletur in omnibus suis partibus, motibus et motoribus, ut phylosophando evidentissime humana ratio deprehendit, si vere sillogizatum est, humanum genus tunc optime se habet, quando ab unico principe tanquam ab unico motore, et unica lege tanquam unico motu, in suis motoribus et motibus reguletur. (2) And since the whole sphere of heaven is guided by a single movement (i.e. that of the Primum Mobile), and by a single source of motion (who is God), in all its own parts, movements and causes of movement, as human understanding perceives quite clearly through philosophical reasoning, then if our argument is sound, mankind is in its ideal state when it is guided by a single ruler (as by a single source of motion) and in accordance with a single law (as by a single movement) in its own causes of movement and in its own movements.
(3) Propter quod necessarium apparet ad bene esse mundi Monarchiam esse, sive unicum principatum qui 'Imperium' appellatur. Hanc rationem suspirabat Boetius dicens:
O felix hominum genus si vestros animos amor, quo celum regitur, regat.
(3) Hence it is clear that monarchy (or that undivided rule which is called "empire") is necessary to the well-being of the world. Boethius expressed this view when he sighed: "O happy race of men, if only the love by which the heavens are ruled might rule your minds".