In the same way, take a man who is otherwise honest (or who even just puts himself in thought in the place of an honest man this time) and hold before him the moral law by which he cognizes the worthlessness of a liar: his practical reason (in judging what ought to be done by him) at once abandons the advantage and unites with what maintains in him the respect for his own person (truthfulness); and now the advantage, after it has been separated and washed from any appendage of reason (which is wholly on the side of duty), is weighed by everyone, so that perhaps it can still enter into combinati with reason zumuten.