Full Idea
A good community has everything which is good, so it necessarily has wisdom, courage, self-discipline and morality.
Gist of Idea
A good community necessarily has wisdom, courage, self-discipline and morality
Source
Plato (The Republic [c.371 BCE], 427e)
Book Reference
Plato: 'Republic', ed/tr. Waterfield,Robin [OUP 1993], p.133