Two virtues remain; temperance and justice. More than the preceding virtues temperance suggests the idea of harmony. Some light is thrown upon the nature of this virtue by the popular description of a man as ‘master of himself’—which has an absurd sound, because the master is also the servant. The expression really means that the better principle in a man masters the worse. There are in cities whole classes—women, slaves and the like—who correspond to the worse, and a few only to the better; and in our State the former class are held under control by the latter. Now to which of these classes does temperance belong? ‘To both of them.’ And our State if any will be the abode of temperance; and we were right in describing this virtue as a harmony which is diffused through the whole, making the dwellers in the city to be of one mind, and attuning the upper and middle and lower classes like the strings of an instrument, whether you suppose them to differ in wisdom, strength or wealth. And now we are near the spot; let us draw in and surround the cover and watch with all our eyes, lest justice should slip away and escape. Tell me, if you see the thicket move first. ‘Nay, I would have you lead.’ Well then, offer up a prayer and follow. The way is dark and difficult; but we must push on. I begin to see a track. ‘Good news.’ Why, Glaucon, our dulness of scent is quite ludicrous! While we are straining our eyes into the distance, justice is tumbling out at our feet. We are as bad as people looking for a thing which they have in their hands. Have you forgotten our old principle of the division of labour, or of every man doing his own business, concerning which we spoke at the foundation of the State—what but this was justice? Is there any other virtue remaining which can compete with wisdom and temperance and courage in the scale of political virtue? For ‘every one having his own’ is the great object of government; and the great object of trade is that every man should do his own business. Not that there is much harm in a carpenter trying to be a cobbler, or a cobbler transforming himself into a carpenter; but great evil may arise from the cobbler leaving his last and turning into a guardian or legislator, or when a single individual is trainer, warrior, legislator, all in one. And this evil is injustice, or every man doing another’s business. I do not say that as yet we are in a condition to arrive at a final conclusion. For the definition which we believe to hold good in states has still to be tested by the individual. Having read the large letters we will now come back to the small. From the two together a brilliant light may be struck out...