Aristotle, Generation of Animals Book 2, 737a

“That [female] substance, even though it possesses all segments of the body in potential, actually exhibits none of them. For it contains those kinds of elements in potential by which the female is distinguished from the male. For just as it happens that at times deformed children come from deformed parents and at times they do not, so too in the same way sometimes female offspring come from females and sometimes they don’t, but males do instead. For the female is like a deformity of the male and menstrual discharge is like semen, but unclean.”

καὶ γὰρ ἐκεῖνο περίττωμα, καὶ πάντα τὰ μόρια ἔχει δυνάμει, ἐνεργείᾳ δ᾿ οὐθέν. καὶ γὰρ τὰ τοιαῦτ᾿ ἔχει μόρια δυνάμει, ᾗ διαφέρει τὸ θῆλυ τοῦ ἄρρενος. ὥσπερ γὰρ καὶ ἐκ πεπηρωμένων ὁτὲ μὲν γίνεται πεπηρωμένα ὁτὲ δ᾿οὔ, οὕτω καὶ ἐκ θήλεος ὁτὲ μὲν θῆλυ ὁτὲ δ᾿ οὔ, ἀλλ᾿ ἄρρεν. τὸ γὰρ θῆλυ ὥσπερ ἄρρεν ἐστὶ πεπηρωμένον, καὶ τὰ καταμήνια σπέρμα, οὐ καθαρὸν δέ

Generation of Animals, Book 4, 767b

“These causes are also of the same. Some [offspring] are born similar to their parents while others are not. Some are similar to their father; others are like their mother, applying both to the body as a whole and to each part. Offspring are more like their parents than their ancestors and more like their ancestors than passersby.

Males are more similar to their father and females are more similar to their mother. But some are not like any of their relatives, but are still akin to human beings while others are like not at all like humans in their appearance, but rather like some monster. For whoever is not like his parents is in some way a monster because nature has in these cases wandered in some way from the essential character. The first beginning of this is when a female was born instead of a male.

But this is necessary by nature since a race of things divided by male and female must be preserved and since the male may at times not be in control because of age or youth or some other reason, it is necessary for species to have female offspring. Monstrosity is not necessary for any reason or specific ends, but it is necessary by probability of accident—since its origin must be considered as residing here.”

Αἱ δ᾿ αὐταὶ αἰτίαι καὶ τοῦ τὰ μὲν ἐοικότα γίνεσθαι τοῖς τεκνώσασι τὰ δὲ μὴ ἐοικότα, καὶ τὰ μὲν πατρὶ τὰ δὲ μητρί, κατά τε ὅλον τὸ σῶμα καὶ κατὰ μόριον ἕκαστον, καὶ μᾶλλον αὐτοῖς ἢ τοῖς προγόνοις, καὶ τούτοις ἢ τοῖς τυχοῦσι, καὶ τὰ μὲν ἄρρενα μᾶλλον τῷ πατρὶ τὰ δὲ θήλεα τῇ μητρί, τὰ δ᾿ οὐδενὶ τῶν συγγενῶν, ὅμως δ᾿ ἀνθρώπῳ γέ τινι, τὰ δ᾿ οὐδ᾿ ἀνθρώπῳ τὴν ἰδέαν ἀλλ᾿ ἤδη τέρατι. καὶ γὰρ ὁ μὴ ἐοικὼς τοῖς γονεῦσιν ἤδη τρόπον τινὰ τέρας ἐστίν· παρεκβέβηκε γὰρ ἡ φύσις ἐν τούτοις ἐκ τοῦ γένους τρόπον τινά. ἀρχὴ δὲ πρώτη τὸ θῆλυ γίνεσθαι καὶ μὴ ἄρρεν. ἀλλ᾿ αὕτη μὲν ἀναγκαία τῇ φύσει, δεῖ γὰρ σώζεσθαι τὸ γένος τῶν κεχωρισμένων κατὰ τὸ θῆλυ καὶ τὸ ἄρρεν· ἐνδεχομένου δὲ μὴ κρατεῖν ποτὲ τὸ ἄρρεν ἢ διὰ νεότητα ἢ γῆρας ἢ δι᾿ ἄλλην τινὰ αἰτίαν τοιαύτην, ἀνάγκη γίνεσθαι θηλυτοκίαν ἐν τοῖς ζῴοις. τὸ δὲ τέρας οὐκ ἀναγκαῖον πρὸς τὴν ἕνεκά του καὶ τὴν τοῦ τέλους αἰτίαν, ἀλλὰ κατὰ συμβεβηκὸς ἀναγκαῖον, ἐπεὶ τήν γ᾿ ἀρχὴν ἐντεῦθεν δεῖ λαμβάνειν.

τέρας: can mean ‘monster’ (as translated here) or divine sign/omen. In cognates and parallel forms it is also associated with magic and the unnatural.

πηρόω (πεπηρωμένον) is a denominative verb from the noun πηρός, which means “infirm, invalid” (hence: “blind or lame”)

Thomson, Rosemarie Garland. 1997. Extraordinary Bodies: Figuring Physical Disability in American Culture and Literature. New York.

19: “Perhaps the founding association of femaleness with disability occurs in the fourth book of Generation of Animals, Aristotle’s discourse of the normal and the abnormal, in which he refines the Platonic concept of antinomies so that bodily variety translates into hierarchies of the typical and aberrant.”

20: “What this passage makes clearest, however, is that without the monstrous body to demarcate the borders of the generic, without the female body to distinguish the shape of the male, and without the pathological to give form to the normal, the taxonomies of bodily value that underlie political, social and economic arrangements would collapse.”

20: “This persistent intertwining of disability with femaleness in Western discourse provides a starting point for exploring the relationship of social identity to the body. As Aristotle’s pronouncement suggests, the social category of disability rests on the significance accorded bodily functioning and configuration.”