There is to be no gold or silver among them, and they are to have moderate wealth, and to respect number and numerical order in all things.
In the first part of the sixth book, Plato completes his sketch of the constitution by the appointment of officers.

He explains the manner in which guardians of the law, generals, priests, wardens of town and country, ministers of education, and other magistrates are to be appointed; and also in what way courts of appeal are to be constituted, and omissions in the law to be supplied.

Next--and at this point the Laws strictly speaking begin--there follow enactments respecting marriage and the procreation of children, respecting property in slaves as well as of other kinds, respecting houses, married life, common tables for men and women.

The question of age in marriage suggests the consideration of a similar question about the time for holding offices, and for military service, which had been previously omitted.
Resuming the order of the discussion, which was indicated in the previous book, from marriage and birth we proceed to education in the seventh book.

Education is to begin at or rather before birth; to be continued for a time by mothers and nurses under the supervision of the state; finally, to comprehend music and gymnastics.