" Inasmuch as philosophers only are able to grasp the eternal and unchangeable, and those who wander in the region of the many and variable are not philosophers, I must ask you which of the two classes should be the rulers of our State? And how can we rightly answer that question? Whichever of the two are best able to guard the laws and institutions of our State—let them be our guardians. Very "

― Plato , The Republic