or 'concerning love'
Socrates is speaking in Plato's Symposium:
'All men,' she said 'are pregnant, Socrates, both in body and soul: on reaching a certain age our nature yearns to beget. This it cannot do upon an ugly person, but only on the beautiful: the conjunction of man and woman is a begetting for both. It is a divine affair, this engendering and bringing to birth, an immortal element in the creature that is mortal; and it cannot occur in the discordant. The ugly is discordant with whatever is divine, whereas the beautiful is accordant.
Thus beauty presides over birth as Fate and Lady of Travail; and hence it is that when the pregnant approaches the beautiful it becomes not only gracious, but so exhilarated, that it flows over with begetting and bringing forth; though when it meets the ugly it coils itself close in a sullen dismay: rebuffed and repressed, it brings not forth but goes in labour with the burden of its young.
Therefore when a person is big and teeming-ripe, he feels himself in a
sore flutter for the beautiful, because its possession can relieve him
of its heavy pangs. For you are wrong, Socrates, in supposing that Love
is of the beautiful. What then is it? It is of engendering and begetting
upon the beautiful.'(...);'
Plato, Symposium 206c-e (Loeb edition)
From Medea to Sappho - Radical Women in Ancient Greece
Athens, National Archaeological Museum - 20 March - 30 June 1995