Full Idea
The greatest good which can exist in a state is to have true philosophers.
Gist of Idea
The greatest good for a state is true philosophers
Source
René Descartes (Principles of Philosophy [1646], Pref)
Book Reference
Descartes,René: 'Philosophical Essays and Correspondence', ed/tr. Ariew,Roger [Hackett 2000], p.223
A Reaction
…because they understand true reality, especially the Good.