Making an even better case that Theory and History should be my next purchase from the Ludwig von Mises Institute, Mises Daily produces another gem, an excerpt from said book. Here's a highlight:
Rationalization is the name psychoanalysis gives to the construction of a pretext to justify conduct in the actor's own mind. Either the actor is loath to admit the real motive to himself or he is not aware of the repressed urge directing him. He disguises the subconscious impulse by attaching to his actions reasons acceptable to his superego. He is not consciously cheating and lying. He is himself a victim of his illusions and wishful thinking. He lacks the courage to look squarely at reality. As he dimly surmises that the cognition of the true state of affairs would be unpleasant, undermine his self-esteem, and weaken his resolution, he shrinks from analyzing the problems beyond a certain point. This is of course a rather dangerous attitude, a retreat from an unwelcome reality into an imaginary world of fancy that pleases better. A few steps further in the same direction may lead to insanity.
However, in the lives of individuals there are checks that prevent such rationalizations from becoming rampant and wreaking havoc. Precisely because rationalization is a type of behavior common to many, people are watchful and even often suspect it where it is absent. Some are always ready to unmask their neighbors' sly attempts to bolster their own self-respect. The most cleverly constructed legends of rationalization cannot in the long run withstand the repeated attacks of debunkers.
It is quite another thing with rationalization developed for the benefit of social groups. That can thrive luxuriantly because it encounters no criticism from the members of the group and because the criticism of outsiders is dismissed as obviously biased. One of the main tasks of historical analysis is to study the various manifestations of rationalization in all fields of political ideologies.More here.