Saint Anselm,
Cur Deus Homo — Book Second, Chapter VIII
“ In four ways can God create man, viz., either of man and woman, in the common way; or neither of man nor woman, as he created Adam; or of man without woman, as he made Eve; or of woman without man, which thus far he has never done. Wherefore, in order to show that this last mode also under his power, and was reserved for this very purpose, what more fitting than that he should take that man whose origin we are seeking from a woman without a man? ”
