Just here then is the original basis of society--gignetai toinyn hôs egômai polis epeidê tunchanei hêmôn hekastos ouk autarkês +--at first in its humblest form; simply because one can dig and another spin; yet already with anticipations of The Republic, of the City of the Perfect, as developed by Plato, as indeed also, beyond it, of some still more distant system "of the services of angels and men in a wonderful order"; for the somewhat visionary towers of Plato's Republic blend of course with those of the Civitas Dei of Augustine. Only, though its top may one day "reach unto heaven," it by no means came down thence; but, as Plato conceives, arises out of the earth, out of the humblest natural wants. Grote was right.--There is a very shrewd matter-of-fact utilitarian among the dramatis personae which together make up the complex genius of Plato. Poiêsei hôs egômai tên polin hêmetera chreia+.--Society is produced by our physical necessities, our inequality in regard to them:--an inequality in three broad divisions of unalterable, incommunicable type, of natural species, among men, with corresponding differentiation of political and social functions: three firmly outlined orders [244] in the state, like three primitive castes, propagating, reinforcing, their peculiarities of condition, as Plato will propose, by exclusive intermarriage, each within itself. As in the class of the artisans (hoi dêmiourgoi)+ some can make swords best, others pitchers, so, on the larger survey, there will be found those who can use those swords, or, again, think, teach, pray, or lead an army, a whole body of swordsmen, best, thus defining within impassable barriers three essential species of citizenship--the productive class, the military order, the governing class thirdly, or spiritual order.