CHAPTER VIII

As in natural bodies those things are not admitted to be parts of them without which the whole would not exist, so also it is evident that in a political state everything that is necessary thereunto is not to be considered as a part of it, nor any other community from whence one whole is made; for one thing ought to be common and the same to the community, whether they partake of it equally or unequally, as, for instance, food, land, or the like; but when one thing is for the benefit of one person, and another for the benefit of another, in this there is nothing like a community, excepting that one makes it and the other uses it; as, for instance, between any instrument employed in making any work, and the workmen, as there is nothing common between the house and the builder, but the art of the builder is employed on the house. Thus property is necessary for states, but property is no part of the state, though many species of it have life; but a city is a community of equals, for the purpose of enjoying the best life possible: but the happiest life is the best which consists in the perfect practice of virtuous energies: as therefore some persons have great, others little or no opportunity of being employed in these, it is evident that this is the cause of the difference there is between the different cities and communities there are to be found; for while each of these endeavour to acquire what is best by various and different means, they give [1328b] rise to different modes of living and different forms of government. We are now to consider what those things are without which a city cannot possibly exist; for what we call parts of the city must of necessity inhere in it: and this we shall plainly understand, if we know the number of things necessary to a city: first, the inhabitants must have food: secondly, arts, for many instruments are necessary in life: thirdly, arms, for it is necessary that the community should have an armed force within themselves, both to