To win agreement on the right to live is to gain help with a yet vaster range. The philosopher, who knows the widest principles, has the means to win help across the widest range of issues. That is a matter for yet other discussions. We can now explain how philosophy rules the world. Philosophy rules through diplomacy.
Diplomatic discussions are no idle academic debates.
They are preliminaries to concerted action. Diplomacy is reason in action among men. He who sins against diplomacy sins against reason. You may be able to avoid those who sin against diplomacy, but when you can't avoid them, you must wage war upon them. The alternative of reason vs. force is the alternative of diplomacy vs. war.