Animals, therefore, are not guided in these inferences by reasoning: Neither are children: Neither are the generality of mankind, in their ordinary actions and conclusions: Neither are philosophers themselves, who, in all the active parts of life, are, in the main, the same with the vulgar, and are governed by the same maxims. (Hume, David S. "Concerning Human Understanding" Section IX, 84.)
Socrates, however, consistently cites that the people of the kallipolis, raised in virtue, justice, and with a knowledge of what is good, will realize the justice of the kallipolis and act according to their sense of justice and for the good of the city. This argument is fine in and of itself. When you reach the political structure of the kallipolis, however, certain ideas are brought into question.