Cyropaedia

Yes, by Zeus, said he, toward wild animals however; but if I ever even seemed to wish to deceive a man, I know that I got a good beating for it. Yes said he; for, methinks, we did not permit you to shoot at people nor to throw your spear at them; but we taught you to shoot at a mark, in order that you might not for the time at least do harm to your friends, but, in case there should ever be a war, that you might be able to aim well at men also. And we instructed you likewise to deceive and to take advantage, not in the case of men but of beasts, in order that you might not injure your friends by so doing, but, if there should ever be a war, that you might not be unpractised in these arts.

Well then, father, said he, if indeed it is[*](Training for taking unfair advantage) useful to understand both how to do good and how to do evil to men, we ought to have been taught both these branches in the case of men, too.

Yes, my son, said he; it is said that in the time of our forefathers there was once a teacher of the boys who, it seems, used to teach them justice in the very way that you propose; to lie and not to lie, to cheat and not to cheat, to slander and not to slander, to take and not to take unfair advantage. And he drew the line between what one should do to one’s friends and what to one’s enemies. And what is more, he used to teach this: that it was right to deceive friends even, provided it were for a good end, and to steal the possessions of a friend for a good purpose.

And in teaching these lessons he had also to train the boys to practise them upon one another, just as also in wrestling, the Greeks, they say, teach deception and train the boys to be able to practise it upon one another. When, therefore, some had in this way become expert both in deceiving successfully and in taking unfair advantage and perhaps also not inexpert in avarice, they did not refrain from trying to take an unfair advantage even of their friends.

In consequence of that, therefore, an ordinance was passed which obtains even unto this day, simply to teach our boys, just as we teach our servants in their relations toward us, to tell the truth and not to deceive and not to take unfair advantage; and if they should act contrary to this law, the law requires their punishment, in order that, inured to such habits, they may become more refined members of society.

But when they came to be as old as you are now, then it seemed to be safe to teach them that also which is lawful toward enemies; for it does not seem likely that you would break away and degenerate into savages after you had been brought up together in mutual respect. In the same way we do not discuss sexual matters in the presence of very young boys, lest in case lax discipline should give a free rein to their passions the young might indulge them to excess.