The chaplain had sinned, and it was good. Common sense told him that telling lies and defecting from duty were sins. On the other hand, everyone knew that sin was evil and that no good could come from evil. But he did feel good; he felt positively marvelous. Consequently, it followed logically that telling lies and defecting from duty could not be sins. The chaplain had mastered, in a moment of divine intuition, the handy technique of protective rationalization, and he was exhilarated by his discovery. It was miraculous.
Joseph Heller, Catch-22
feeling, rationalization, sin