Morality is injured by prescribing to it duties that, in the first place, are impossible to be performed; and, if they could be, would be productive of evil; or, as before said, be premiums for crime. The maxim of doing as we would be done unto does not include this strange doctrine of loving enemies:for no man expects to be loved himself for his crime or for his enmity.
The Age of Reason (1795)