He must never cease from cultivating and studying himself, that he may excite others to imitate him, and become, through the splendor of his talents and enterprises, a living mirror to his countrymen.

For as in flutes and harps, and in all vocal performances, a certain unison and harmony must be preserved amidst the distinctive tones, which cannot be broken or violated without offending experienced ears; and as this concord and delicious harmony is produced by the exact gradation and modulation of dissimilar notes; even so, by means of the just apportionment of the highest, middle, and lower classes, the State is maintained in concord and peace by the harmonic subordination of its discordant elements: and thus, that which is by musicians called harmony in song answers and corresponds to what we call concord in the State--concord, the strongest and loveliest bond of security in every commonwealth, being always accompanied by justice and equity.
XLIII.

And after this, when Scipio had discussed with considerable breadth of principle and felicity of illustration the great advantage that justice is to a state, and the great injury which would arise if it were wanting, Pilus, one of those who were present at the discussion, took up the matter and demanded that this question should be argued more carefully, and that something more should be said about justice, on account of a sentiment that was now obtaining among people in general, that political affairs could not be wholly carried on without some disregard of justice.
XLIV.

* * * to be full of justice.
Then Scipio replied: I certainly think so.

And I declare to you that I consider that all I have spoken respecting the government of the State is worth nothing, and that it will be useless to proceed further, unless I can prove that it is a false assertion that political business cannot be conducted without injustice and corruption; and, on the other hand, establish as a most indisputable fact that without the strictest justice no government whatever can last long.
But, with your permission, we have had discussion enough for the day.
The rest--and much remains for our consideration--we will defer till to-morrow.