Rationalization is a cover-up, a process of providing one's emotions with a false identity, of giving them spurious explanations and justifications - in order to hide one's motives, not just from others, but primarily from oneself. The price of rationalizing is the hampering, the distortion, and, ultimately, the destruction of one's cognitive faculty. Rationalization is a process not of perceiving reality, but of attempting to make reality fit one's emotions.
Ayn RandWhen man learns to understand and control his own behavior as well as he is learning to understand and control the behavior of crop plants and domestic animals, he may be justified in believing that he has become civilized.
Ayn Rand