Why, in the first place, although they are all of a good sort, are not some better than others? True. And do you breed from them all indifferently, or do you take care to breed from the best only? From the best. And do you take the oldest or the youngest, or only those of ripe age? I choose only those of ripe age. And if care was not taken in the breeding, your dogs and birds would greatly deteriorate? Certainly. And the same of horses and animals in general? Undoubtedly. Good heavens! my dear friend, I said, what consummate skill will our rulers need if the same principle holds of the human species! Certainly, the same principle holds; but why does this involve any particular skill? Because, I said, our rulers will often have to practise upon the body corporate with medicines. Now you know that when patients do not require medicines, but have only to be put under a regimen, the inferior sort of practitioner is deemed to be good enough; but when medicine has to be given, then the doctor should be more of a man. That is quite true, he said; but to what are you alluding? I mean, I replied, that our rulers will find a considerable dose of falsehood and deceit necessary for the good of their subjects: we were saying that the use of all these things regarded as medicines might be of advantage. And we were very right. And this lawful use of them seems likely to be often needed in the regulations of marriages and births. How so? Why, I said, the principle has been already laid down that the best of either sex should be united with the best as often, and the inferior with the inferior, as seldom as possible; and that they should rear the offspring of the one sort of union, but not of the other, if the flock is to be maintained in first-rate condition. Now these goings on must be a secret which the rulers only know, or there will be a further danger of our herd, as the guardians may be termed, breaking out into rebellion. Very true. Had we not better appoint certain festivals at which we will bring together the brides and bridegrooms, and sacrifices will be offered and suitable hymeneal songs composed by our poets: the number of weddings is a matter which must be left to the discretion of the rulers, whose aim will be to preserve the average of population? There are many other things which they will have to consider, such as the effects of wars and diseases and any similar agencies, in order as far as this is possible to prevent the State from becoming either too large or too small. Certainly, he replied. We shall have to invent some ingenious kind of lots which the less worthy may draw on each occasion of our bringing them together, and then they will accuse their own ill-luck and not the rulers. To be sure, he said.