The immoral man always sees the moral man as immoral, just a way for him to justify his immorality.
But the point is this Monsieur...the reason why Madame complains of you is not because of the immorality in itself; but because, so she tells me, you make immorality delicious.
(n.) The state or quality of being immoral; vice.
(n.) An immoral act or practice.