 … is the one in which there is mutual assistance for earning what is necessary to constitute and safeguard bodies. …. Among the necessary cities, there may be some that bring together all of the arts that procure what is necessary. Their ruler is the one who has fine governance and excellent stratagems for using [the citizens] so that they gain the necessary things and fine governance in preserving these things for them or who bestows these things on them from what he has. (Political Regime C, 2, 94: 77)