To this subject he again returns in the eighth book.

Fourthly, the virtues are affirmed to be inseparable from one another, even if not absolutely one; this, too, is a principle which he reasserts at the conclusion of the work.

As in the beginnings of Plato's other writings, we have here several 'notes' struck, which form the preludes of longer discussions, although the hint is less ingeniously given, and the promise more imperfectly fulfilled than in the earlier dialogues.
The distinction between ethics and politics has not yet dawned upon Plato's mind.

To him, law is still floating in a region between the two.
He would have desired that all the acts and laws of a state should have regard to all virtue.

But he did not see that politics and law are subject to their own conditions, and are distinguished from ethics by natural differences.