Final answer:
A city composed of virtuous citizens is considered the best and most secure due to their lack of covetousness. Plato and Al-Farabi stress that virtuous actions and wise rulers are essential for a city's well-being and the happiness of its citizens.
Step-by-step explanation:
The city that is composed of Virtuous citizens is necessarily best and most secure in not coveting, nor do others covet theirs. Plato and Al-Farabi emphasize the importance of virtue in a city. Plato establishes the four virtues upon which the state should be founded: wisdom, courage, discipline, and justice. Al-Farabi's city must be ruled by a philosopher and seek to educate a class of philosopher-elites who can assist in the city's management. Both philosophers argue that a virtuous city, governed by wise and just rulers, provides the greatest chance of attaining true happiness.