In Book VII, p. 520, Socrates describes the arguments by which the philosophers must be induced to “return to the cave,” that is to say, to resume the practical business of politics from which they have escaped into the better life of contemplation. They must be shown that this sacrifice is a debt which they owe to the city in return for the opportunity which it has afforded them of becoming philosophers. “Will our pupils,"1 he continues, “when they hear this, (...) refuse to share in turn the toils of state, when they are allowed to spend the greater part of their time with one another in the heaven of ideas?” “Impossible,” Glaucon replies; “for they are just men, and the commands which we impose on them are just; there can be no doubt that every one of them will take office as a stern necessity, and not like our present ministers of state’. (shrink)