With regard to property, Aristotle begins by considering what things it is necessary for. These he finds to be six, three private and three public. The former are food (including clothing and shelter), instruments of production, and arms; the latter are public enterprises (civil and military), religion, and law. These are the "necessaries" (ἀναγκαία) of a State, for which it must duly provide. The most important of all is religion, on which he everywhere lays great stress. As to the distribution of property, he propounds a scheme which is half socialistic. All the land is to belong to the State, that is, to the body of the free citizens. It is to be divided into two equal portions, and one set apart for public, the other for private, uses. The revenue from the public part is to go for the support of religion (and law?) and of the public tables, from which no citizen is excluded by poverty. The private part is to be so divided that each citizen shall have one lot near the city, and one near the frontier. This will give him an interest in defending the whole territory. Both parts are to be cultivated by serfs or slaves, part of whom will necessarily belong to the State, and part to private individuals. Land-owning is to be a condition of citizenship, and all citizens are to be forbidden to exercise any form of productive industry. This last rule, it is hoped, will prevent grievous inequalities of wealth, and the evils that flow from them. A modest competency, derived from his estate, is all that any citizen should aim at. Only degraded people, incapable of virtue, will crave for more. Upon the distinction of classes some light has been already thrown. They are two; the ruling and the ruled. Aristotle holds that this distinction runs through the whole of nature and spirit, that it is fundamental in being itself. It holds between God and the universe, form and matter, soul and body, object and subject, husband and wife, parent and child, master and slave, etc., etc. The ruling class again is sub-divided into two parts, one that thinks and determines (legislators and judges), and one that executes (officials, officers, soldiers); while the ruled is sub-divided into husbandmen, mechanics, and seamen (sailors, fishermen, etc.). All the members of the ruled class are serfs or public slaves, working, not for themselves, but for their masters. Aristotle holds that they ought to be barbarians of different races, and not Greeks.