Both of his parents were Ionian in origin. His mother was a native of Chalcis, from which Stagira had been colonized. His Father, Nicomachus, belonged to the guild of the "sons of Aesculapius" and …
Of the parts of animals some are simple: to wit, allsuch as divide into parts uniform with themselves, as flesh into flesh; other are composite, such as divide into parts not uniform with themselve…