Full Idea
Stoics say the best political constitution is a mixed one, combined of democracy, and kingly power, and aristocracy.
Gist of Idea
Stoics favour a mixture of democracy, monarchy and aristocracy
Source
report of Stoic school (fragments/reports [c.200 BCE]) by Diogenes Laertius - Lives of Eminent Philosophers 07.Ze.66
Book Reference
Diogenes Laertius: 'Diogenes Laertius', ed/tr. Yonge,C.D. [Henry G. Bohn 1853], p.307