In this mythical-textual mechanics, then, the hero must be male, regardless of the gender of the text-image, because the obstacle, whatever its personification, is morphologically female and indeed, simply, the womb. The implication here is [that] the primary distinction on which all depends is not, say, life and death, but rather sexual difference.

Teresa de Lauretis 1984, p.118-19, quoted in Killick, p.84-85