 Many of Magnesia’s inhabitants are not citizens. There is a considerable slave population (including both public and private slaves) and they, of course, are not citizens. Also found within the city are transient foreigners and resident foreigners (metics) who may stay for twenty years. Slaves and foreigners are an economic necessity for the city for they will carry on the trading, manufacturing and menial occupations that are barred to citizens. The lot holders or heads of households are citizens, but citizenship is not restricted to them and owning land is not a necessary condition of citizenship. The sons and heirs of lot holders are called “citizens” and are liable to military service at age 20, can participate in elections at that age and can serve in office at  30.[25]  They will not inherit the household lot, however, until their father dies. What of women? In Magnesia, the private family is not abolished. Although women lack an independent right to own property, they are liable to military training and service and attend their own common meals (Laws 780D). The Athenian holds that they can attain the four cardinal virtues and for this reason requires that they be educated (Laws 804D–805A). For Aristotle, women are not citizens of the ideal city, since they are excluded from political office. But in Magnesia, women can participate in elections and hold political office and the Athenian explicitly counts them as citizens (Laws  814C2–4).[26]