Institutio Oratoria

But unless every word that he utters reveals an ardent paternal affection, hatred for his wealthy opponent and anxiety on behalf of the youth, who will, he knows, be exposed to serious danger if he remains in the house where he is the victim of such dislike, he will be unable to avoid creating the suspicion that he has been suborned to bring the action.

It sometimes happens in the controversial themes of the schools, though I doubt whether it could ever occur in the courts, that both sides employ the same gloss and support it on their own behalf.