And yet we might fairly ask, a little parodying the language of Plato--O legislator, is unanimity only 'the struggle for existence'; or is the balance of powers in a state better than the harmony of them?
In the fourth book we approach the realities of politics, and Plato begins to ascend to the height of his great argument.

The reign of Cronos has passed away, and various forms of government have succeeded, which are all based on self-interest and self-preservation.

Right and wrong, instead of being measured by the will of God, are created by the law of the state.

The strongest assertions are made of the purely spiritual nature of religion--'Without holiness no man is accepted of God'; and of the duty of filial obedience,--'Honour thy parents.' The legislator must teach these precepts as well as command them.

He is to be the educator as well as the lawgiver of future ages, and his laws are themselves to form a part of the education of the state.