A Lie (n.) fathered by a wish and then believed is a well-known hysterical symptom — as with the 'stab in the back' legend.
A Lie (n.) becomes the operative principle of political action once the individual's ethical decision no longer counts and only the blind movement of the masses matters.
A Lie (n.) told to save a life tests conscience against code: sticking to 'Thou shalt not lie' in all circumstances is not obeying conscience but merely the moral code.
A Lie (n.) about a religious experience is still a psychic fact — one could write a scientific treatise on the incidence of such lies.
A Lie (n.) the child accuses her mother of — You're lying to me! — is the stork story she was told: love withdrawn from parents who refused her the truth turns inward into reverie.
A Lie (n.) can avert a fatal row: Jung told Freud the skulls in his dream meant relatives he wished dead — neither elegant nor defensible, but it kept the peace.