[Sidenote: Social system--the nobility, the people.] As to their social system, polygamy was permitted, but practically it was confined to the higher classes. Social subordination was thoroughly understood. The Inca Tupac Yupanqui says, "Knowledge was never intended for the people, but only for those of generous blood." The nobility were of two orders, the polygamic descendants of the Incas, who were the main support of the state, and the adopted nobles of nations that have been conquered. As to the people, nowhere else in the whole world was such an extraordinary policy of supervision practised. They were divided into groups of ten, fifty, one hundred, five hundred, one thousand, ten thousand, and over the last an Inca noble was placed. Through this system a rigid centralization was insured, the Inca being the pivot upon which all the national affairs turned, it was an absolutism worthy of the admiration of many existing European nations. [Sidenote: Organization of Labour.] The entire territory was divided into three parts; one belonged to the Sun, one to the Inca, one to the people. As a matter of form, the subdivision was annually made; in practice, however, as perhaps must always be the result of such agrarianism, the allotments were continually renewed. All the land was cultivated by the people, and in the following order: first, that of the Sun, then that of the destitute and infirm, then that of the people, and, lastly, that of the Inca. The Sun and the Inca owned all the sheep, which were sheared and their wool distributed to the people, or cotton furnished in its stead. The Inca's officers saw that it was all woven, and that no one was idle. An annual survey of the country, its farming and mineral products, was made, the inventory being transmitted to the government. A register was kept of births and deaths; periodically a general census was taken. The Inca, at once emperor and pope, was enabled, in that double capacity, to exert a rigorous patriarchal rule over his people, who were treated like mere children--not suffered to be oppressed, but compelled to be occupied; for, with a worldly wisdom which no other nation presents, labour was here acknowledged not only as a means, but also as an end. In Peru a man could not improve his social state; by these refinements of legislation he was brought into an absolutely stationary condition. He could become neither richer nor poorer; but it was the boast of the system that every one lived exempt from social suffering--that all enjoyed competence.