Authors:

The so-called mother of the child isn't the child's begetter, but only a sort of nursing soil for the new-sown seed. The man, the one on top, is the true parent, while she, a stranger, foster's a stranger's sprout.

Aeschylus (2011). “The Complete Aeschylus: Volume I: The Oresteia”, p.174, Oxford University Press
The so-called mother of the child isn't the child's begetter, but only a sort of nursing soil for the new-sown seed. The man, the one on top, is the true parent, while she, a stranger, foster's a stranger's sprout.