In this paper, I argue that in the Republic Plato justifies the political authority of the guardians in light of the principle of partnership — a principle which fits coherently with other Platonic principles which undergird his political theory, including optimum functionality, social justice and power. Therefore, I argue that, by their respective professions, there is a cooperative interaction between the guardians and the producers as partners within the political structure of the ideal polis towards attaining the eudaemonistic goals of both the individual and the polis. I contrast this with the orthodox interpretation that Plato justifies political authority using the idea of the Good — an interpretation which hold...