According to Socrates, a state made up of different kinds of souls will, overall, decline from an aristocracy (rule by the best) to a timocracy (rule by the honourable), then to an oligarchy (rule by the few), then to a democracy (rule by the people), and finally to tyranny (rule by one person, rule by a tyrant). Aristocracy in the sense of government (politeia) is advocated in Plato's Republic. This regime is ruled by a philosopher king, and thus is grounded on wisdom and reason.