[IDEM libro trigensimo primo quaestionum. ] §50.17.78.prGeneraliter cum de fraude disputatur, non quid non habeat actor, sed quid per aduersarium habere non potuerit, considerandum est.
[THE SAME, from his thirty-first book of Questions.] Generally, when there is a dispute concerning fraud, we must consider not what the plaintiff does not have, but what he could not have had because of his opponent.