Book I, Chapter XIV

And where a thing can be done by one agent, it is better to do it by one than by several, for this reason: Let it be possible to do a certain thing by means of A, and also by means of A and B. If therefore what is done by A and B can be done by A alone, it is useless to add B; for nothing follows from the addition; for the same end which A and B produced is produced also by A. All additions of this kind are useless and superfluous: all that is superfluous is displeasing to God and Nature: and all that is displeasing to God and Nature is bad, as is manifest. It therefore follows not only that it is better that a thing should be done by one than by many agents, if it is possible to produce the effect by one; but also that to produce the effect by one is good, and to produce it by many is simply bad. Again, a thing is said to be better by being nearer to the best, and the end has the nature of the best. But for a thing to be done by one agent is better, for so it comes nearer to the end. And that so it comes nearer is manifest; for let C be the end which may be reached by A, or by A and B together: plainly it is longer to reach C by A and B together than by B alone. But mankind may be governed by one supreme prince, who is, the Monarch.

But it must be carefully observed that when we say that mankind may be ruled by one supreme prince, we do not mean that the most trifling judgments for each particular town are to proceed immediately from him. For municipal laws sometimes fail, and need guidance, as the Philosopher shows in his fifth book to Nicomachus, when he praises equity.¹ For nations and kingdoms and states have, each of them, certain peculiarities which must be regulated by different laws. For law is the rule which directs life. Thus the Scythians need one rule, for they live beyond the seventh climate,² and suffer cold which is almost unbearable, from the great inequality of their days and nights. But the Garamantes need a different law, for their country is equinoctial, and they cannot wear many clothes, from the excessive heat of the air, because the day is as long as the darkness of the night. But our meaning is that it is in those matters which are common to all men, that men should be ruled by one Monarch, and be governed by a rule common to them all, with a view to their peace. And the individual princes must receive this rule of life or law from him, just as the practical intellect receives its major premiss from the speculative intellect, under which it places its own particular premiss, and then draws its particular conclusion, with a view to action. And it is not only possible for one man to act as we have described; it is necessary that it should proceed from one man only to avoid confusion in our first principles. Moses himself wrote in his law that he had acted thus. For he took the elders of the tribes of the children of Israel, and left to them the lesser judgments, reserving to himself such as were more important, and wider in their scope; and the elders carried these wider ones to their tribes, according as they were applicable to each separate tribe.

Therefore it is better for the human race to be ruled by one than by many, and therefore there should be a Monarch, who is a single prince; and if it is better, it is more acceptable to God, since God always wills what is best. And since of these two ways of government the one is not only the better, but the best of all, it follows not only that this one is more acceptable to God as between one and many, but that it is the most acceptable. Therefore it is best for the human race to be governed by one man; and Monarchy is necessary for the welfare of the world.