"Yes," replied Cossinius, "they are the considerations of what was the origin, what the importance, and what the economy of the husbandry of live stock. Varro here had begun to discourse upon them while we were calling on Petus during his illness, when the arrival of the physician interrupted us." "Of the three divisions of the [Greek: historikon] or interpretation of this subject, which you have mentioned, I will venture," said I, "to speak only of the first two, of the origin and of the importance of this industry. The third division, of how it should be practised, Scrofa shall undertake for us, as one, if I may speak Greek to a company of half Greek shepherds [Greek: hos per mou pollon ameinon] (who is better qualified than I am),[110] for Scrofa was the teacher of C. Lucilius Hirrus, your son-in-law, whose flocks and herds in Bruttii have such reputation." "But," interrupted Scrofa, "you shall hear what we have to say only on condition that you, who come from Epirus and are masters of the art of feeding cattle, shall recompense us and shall give public testimony of what you know on the subject: for none of us knows it all." Having thus assumed that my share of the discussion should be the first or theoretical part of the subject (which I did, although I have a stock farm in Italy, because, as the proverb is, not every one who owns a lyre is a musician), I began: "Doubtless in the very order of nature both man and cattle have existed since the beginning of time, for whether we believe that there was a First Cause of the generation of animals, as Thales of Miletus and Zeno of Citium maintained, or that there was none as was the opinion of Pythagoras of Samos and Aristotle of Stagira, it is, as Dicaearchus points out, a necessity of human life to have descended gradually from the earliest time to the present day: thus in the beginning was the primitive age when man lived on whatever the virgin soil produced spontaneously; thence he descended to the second or pastoral age, when, as he had formerly gathered for his use acorns,[111] strawberries, mulberries and apples by picking them from trees and bushes, so now, to satisfy a like need, he captured in the woods such as he could of the wild beasts of the field, and, having enclosed, began to domesticate them. Among these it is considered not without reason that sheep were foremost, both because of their utility and because of their docile nature, for this animal is the gentlest of all and most readily accommodated to the life of man, and supplies him with milk and cheese for food, and skins and wool to clothe his body.