two classes--the second of which you comprehended under the general name of beasts. This is the sort of division which an intelligent crane would make: he would put cranes into a class by themselves for their special glory, and jumble together all others, including man, in the class of beasts. An error of this kind can only be avoided by a more regular subdivision. Just now we divided the whole class of animals into gregarious and non-gregarious, omitting the previous division into tame and wild. We forgot this in our hurry to arrive at man, and found by experience, as the proverb says, that 'the more haste the worse speed.' And now let us begin again at the art of managing herds. You have probably heard of the fish-preserves in the Nile and in the ponds of the Great King, and of the nurseries of geese and cranes in Thessaly. These suggest a new division into the rearing or management of land-herds and of water-herds:--I need not say with which the king is concerned. And land-herds may be divided into walking and flying; and every idiot knows that the political animal is a pedestrian. At this point we may take a longer or a shorter road, and as we are already near the end, I see no harm in taking the longer, which is the way of mesotomy, and accords with the principle which we were laying down. The tame, walking, herding animal, may be divided into two classes--the horned and the hornless, and the king is concerned with the hornless; and these again may be subdivided into animals having or not having cloven feet, or mixing or not mixing the breed; and the king or statesman has the care of animals which have not cloven feet, and which do not mix the breed. And now, if we omit dogs, who can hardly be said to herd, I think that we have only two species left which remain undivided: and how are we to distinguish them? To geometricians, like you and Theaetetus, I can have no difficulty in explaining that man is a diameter, having a power of two feet; and the power of four-legged creatures, being the double of two feet, is the diameter of our diameter. There is another excellent jest which I spy in the two remaining species. Men and birds are both bipeds, and human beings are running a race with the airiest and freest of creation, in which they are far behind their competitors;--this is a great joke, and there is a still better in the juxtaposition of the bird-taker and the king, who may be seen scampering after them. For, as we remarked in discussing the Sophist, the dialectical method is no respecter of persons. But we might have proceeded, as I was saying, by another and a shorter road. In that case we should have begun by dividing land animals into bipeds and quadrupeds, and bipeds into winged and wingless; we should than have taken the Statesman and set him over the 'bipes implume,' and put the reins of government into his hands.