Hath seized his father's scepter and his bed.635
An impious son (but far more impious,
The mother who in most unhallowed womb
Bore children once again), he forced his way
Back to his source of life, and there begot
Upon his mother offspring horrible,
Got brothers to himself, a custom base,
Whence e'en the very beasts of prey are free.640
Oh, base entanglement, more monstrous far
Than that fell Sphinx which he himself hath slain.