" An extreme case of the distortion of the memory of a committed guilty act is found in its suppression. Here, too, the borderline between good and bad faith can be vague; behind the "I don't know" and "I do not remember" that one hears in courtrooms there is sometimes the precise intent to lie, but at other times it is a fossilized lie, rigidified in a formula. "

― Primo Levi , The Drowned and the Saved