all men are bringing to the birth in their bodies and in their souls. There is a certain age at which human nature is desirous of procreation — procreation which must be in beauty and not in deformity; and this procreation is the union of man and woman, and is a divine thing
Diotima’s speech establishes procreation as a divinely ordered impulse operative at both somatic and psychic levels, insisting that beauty is the necessary condition of generation and that conception and generation constitute an immortal principle within the mortal creature.
, Symposium, -385thesis