Mental Reservations and Other Traps is a book by Father Gormless that discuss the Principle of Double Intent; it was published by Cuminseed Press (Saint Fidgeta and Other Parodies, 46).


The doctrine of mental reservation, or of mental equivocation, was a special branch of casuistry developed in the late Middle Ages and the Renaissance, and most often associated with the Jesuits.  Mental reservation is a form of deception which is not an outright lie. It was argued for in moral theology, and now in ethics, as a way to fulfill obligations both to tell the truth and to keep secrets from those not entitled to know them[1].


  1. Wikipedia: Mental reservation