For this reason, some hold that the legislator should, in the first instance, invite the people and exhort them to be virtuous because of the nobility of virtue, as those who have been well trained will listen to him; but that when they will not listen, or are of less noble nature, he should apply correction and punishment, and banish utterly those who are incorrigible. For the good man, who takes what is noble as his guide, will listen to reason, but he who is not good, whose desires are set on pleasure, must be corrected by pain like a beast of burden. And for this reason, also, they say the pains to be applied must be those that are most contrary to the pleasures which the culprit loves.

As we have said, then, he who is to be good must be well nurtured and trained, and thereafter must continue in a like excellent way of life, and must never, either voluntarily or involuntarily, do anything vile; and this can only be effected if men live subject to some kind of reason and proper regimen, backed by force.