Chapter 46
Being is divided into substance and accident, not as genus into species, but as an equivocal term, or as those things which are derivative and relative.
Chapter 47
Substance is a most general genus. It is divided into corporeal and incorporeal.
The corporeal is divided into animate and inanimate.
The animate is divided into sentient, or animal, zoophyte, and non-sentient, or plant.
The animal is divided into rational and irrational.
The rational is divided into mortal and immortal.
The mortal is divided into man, ox, horse, dog, and the like.
Man is divided into Peter, Paul, and all other individual men. These are individuals, hypostases, and persons.
{Διαίρεσις τοῦ ὄντος καὶ τῆς οὐσίας.} Τὸ ὂν διαιρεῖται εἰς οὐσίαν καὶ συμβεβηκός, οὐχ ὡς γένος εἰς εἴδη ἀλλ' ὡς ὁμώνυμος φωνὴ ἢ ὡς τὰ ἀφ' ἑνὸς καὶ πρὸς ἕν. Ἡ οὐσία γενικώτατον γένος ἐστίν: αὕτη διαιρεῖται αʹ Τὸ σῶμα εἶδος τῆς οὐσίας καὶ γένους τοῦ ἐμψύχου, βʹ τὸ ἔμψυχον εἶδος τοῦ σώματος καὶ γένος τοῦ αἰσθητικοῦ, γʹ τὸ αἰσθητικὸν ζῷον εἶδος τοῦ ἐμψύχου καὶ γένος τοῦ λογικοῦ, δʹ τὸ λογικὸν εἶδος τοῦ ζῴου καὶ γένος τοῦ θνητοῦ, εʹ τὸ θνητὸν εἶδος τοῦ λογικοῦ καὶ γένος τοῦ ἀνθρώπου, ὁ ἄνθρωπος εἰδικώτατον εἶδος: εἶδος γάρ ἐστι τοῦ θνητοῦ καὶ εἶδος Πέτρου καὶ Παύλου, ὅπερ ἐστὶ φύσις καὶ μορφὴ καὶ οὐσία κατὰ τοὺς ἁγίους πατέρας.